What’s a principle stating that the genetic
variation in apopulation will remain the
same/constant from one generation to
the next in the absence of disturbing
factors
Answers
The principle you're referring to is known as the Hardy-Weinberg Equilibrium. It states that the genetic variation within a population will remain constant from one generation to the next in the absence of disturbing factors.
This equilibrium is based on a set of assumptions, including random mating, no natural selection, no mutation, no genetic drift, and no gene flow (migration).
When these conditions are met, the frequency of alleles and genotypes in a population will remain stable, allowing researchers to predict the genetic makeup of future generations.
However, in real-life scenarios, these assumptions are rarely met, causing changes in genetic variation. Disturbing factors, such as mutation, natural selection, and gene flow, play a significant role in altering the genetic composition of populations over time.
In summary, the Hardy-Weinberg Equilibrium is a principle describing the stability of genetic variation in a population under specific conditions. This equilibrium aids in understanding and predicting genetic changes in populations, but it's essential to consider the various factors that can disrupt this balance in real-life situations.
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Related Questions
In a dihybrid cross, one of the parent's genotypes is PPYy. Which of the following would NOT be an expected gamete? (Hint: Use FOIL)
PY
Py
pY
Answers
Answer:
PY
Explanation:
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Mutagenic agents are substances that
1) have no effect upon the rate of gene mutations
2) cause gene mutations but not other chromosomal changes
3) decrease the rate of gene mutations
4) increase the rate of gene mutations
Answers
a person who exhibits both traditional masculine and feminine traits is known as
Answers
A person who exhibits both traditional masculine and feminine traits is known as androgynous.
Androgyny refers to a state in which an individual expresses a combination of characteristics traditionally associated with both masculinity and femininity. It encompasses a fluidity in gender expression that goes beyond adhering strictly to societal gender norms.
An androgynous person may display a range of behaviors, appearances, and interests that are not confined to traditional gender roles. They may possess qualities typically associated with masculinity, such as assertiveness, ambition, or strength, as well as characteristics associated with femininity, such as nurturing, empathy, or sensitivity.
Their self-expression and identity reflect a blend of these attributes, often challenging binary gender stereotypes.
The concept of androgyny recognizes that individuals can possess a diverse spectrum of gender expressions and identities that may not conform to the traditional male/female dichotomy. It acknowledges and embraces the complexity and diversity of human experiences beyond rigid gender categories.
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5 things that do not have DNA?
Answers
just ist five inanimate objects
Which category of macromolecules provides the energy used directly in cells? (1 point)
A. lipids
B. proteins
C. carbohydrates
D. nucleic acids
_______________________________________________________
How is energy stored in ATP?(1 point)
A. ADP loses its extra energy to ATP with the help of glucose.
B. ADP is given a third phosphate group, which stores energy in the bond.
C. ADP loses one phosphate group, leaving it with more energy.
D. ADP is given energy from glucose until it has enough energy to become ATP.
_______________________________________________________
Distinguish between the lytic and lysogenic cycles of viruses.(1 point)
A. The lytic cycle involves the merging together of the viral and host genomes.
B. The lysogenic cycle involves newly replicated virus bursting from the cell.
C. The viral genome is only injected into the cell during the lytic cycle.
D. The viral genome incorporates into the host genome during the lysogenic cycle.
Answers
1. Carbohydrates category of macromolecules provides the energy used directly in cells.
2. ADP is given a third phosphate group, which stores energy in the bond is energy stored in ATP.
3. The viral genome integrates into the host genome during the lysogenic cycle, which is the primary distinction between the lytic and lysogenic cycles (option - D) is correct answer.
How do the viral lytic and lysogenic cycles differ from one another?Viral reproduction happens during the lytic cycle, when a host cell is used to create new viruses, which then burst from the cell. The viral genome is incorporated into the host cell genome during the lysogenic cycle, which causes internal infection of the host cell.
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Describe the process of photosynthesis to explain at least 1 requirement for photosynthesis that would need to be considered for chloroplasts to function in an animal or a human.
Answers
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Select the correct locations on the image.
Use the principle of original horizontality to identify the two rocks that are nearly the same age.
Is their a picture of the answer
Answers
We can see here that using the principle of original horizontality, the two rocks are: Rock C and D.
What is principle of original horizontality?The principle of original horizontality is a fundamental concept in geology that states that sedimentary layers of rock are initially deposited in horizontal or nearly horizontal layers. This principle is based on the understanding that when sediments accumulate, they tend to settle under the influence of gravity and form flat layers over time.
According to the principle of original horizontality, when sedimentary rocks are found in a tilted or folded position, it indicates that significant geological forces, such as tectonic activity or earth movements, have occurred after the deposition of the rock layers.
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A pig breeder wants to select for two traits: Weight and Feed intake. They have decided that they wish to increase weight whilst reducing feed intake. Both traits have the same heritability (0.3) and the same phenotypic standard deviation (2 units). The genetic correlation is 0.40 and the phenotypic correlation 0.30. The breeder has calculated the economic value on the two traits of +2 for weight and -0.5 for feed intake.
A selection index based on own performance is calculated and used to predict response to selection in one generation, which is 1.05 Kg for Weight and 0.25 Kg for Feed intake. The breeder has asked you a series of questions regarding the results.
A. What is a selection index used for in animal breeding?
B. What is the difference between economic values and predicted response? C. Are the economic weights appropriate for the breeder’s goal? Explain why the response for feed intake is positive.
D. Explain how an index could be designed such that there was no response for feed intake.
Answers
The selection index based on own performance is a useful tool for evaluating the potential response to selection for multiple traits.
A) A selection index is a technique used in animal breeding to identify the best breeding animals based on a selection of traits. This index is used to estimate the breeding value of an animal in a breeding program.
B) Economic values are used to assign relative economic importance to different traits in a breeding program. The predicted response, on the other hand, is the expected improvement in a trait due to selection for that trait. It is calculated by multiplying the selection differential by the heritability.
C) The economic weights are appropriate for the breeder’s goal since they reflect the breeder’s desire to increase weight while decreasing feed intake. A positive response for feed intake may be due to the genetic correlation between the two traits. Since the genetic correlation between weight and feed intake is positive, selection for weight will indirectly lead to an increase in feed intake.
D) To design an index such that there was no response for feed intake, the index would need to be designed so that it only selects animals based on their weight and not their feed intake. This would involve assigning a weight of zero to feed intake in the selection index. This would mean that only animals with the highest weight would be selected, regardless of their feed intake.
However, the economic weights used in the index should be appropriate for the breeder’s goal in order to maximize the desired response. In this case, the positive response for weight suggests that the economic weights used are appropriate, but the negative response for feed intake suggests that a different design may be necessary to achieve the breeder’s goal of increasing weight while reducing feed intake.
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Extant nonbird reptiles are __________, whereas birds are different in that they are __________. View Available Hint(s)for Part A amniotes; not amniotic ectothermic; endothermic scaly; lacking in scales endothermic; ectothermic
Answers
Extant nonbird reptiles are ectothermic, whereas birds are different in that they are endothermic. The correct answer is option B.
Extant nonbird reptiles, such as turtles, lizards, and crocodiles, are ectothermic, which means that their body temperature is determined by the environment.
They cannot regulate their body temperature internally and instead rely on external heat sources to warm up or seek shade to cool down.
Additionally, these reptiles lay amniotic eggs that are protected by a shell, which allows them to survive in diverse environments, such as deserts, forests, and oceans.
In contrast, birds are endothermic, meaning that they can maintain a constant internal body temperature through physiological processes such as shivering or panting.
They can maintain a high metabolism, allowing them to fly and maintain activity levels in various environments. Birds also lay amniotic eggs, but their eggs have hard shells and internal membranes that prevent water loss and allow for gas exchange.
Thus, while both nonbird reptiles and birds share the trait of laying amniotic eggs, they differ in their ability to regulate body temperature and metabolism. therefore, the correct answer is ectothermic and endothermic, option B.
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Question
Extant nonbird reptiles are __________, whereas birds are different in that they are __________. View Available Hint(s)for Part A
a) amniotes; not amniotic
b)ectothermic; endothermic scaly;
c)lacking in scales endothermic; ectothermic
Which of the following best describes the cell below?
A.
eukaryotic cell
B.
protist cell
C.
plant cell
D.
prokaryotic cell
Answers
Answer: the answer is C plant cell
Explanation:
Are genetic mutations avoidable? Explain.
Answers
Answer:
Mutations happen in our cells all the time. It's actually how all humans grow and change. The vast majority of mutations are harmless. Thus, they aren't avoidable.
Mutations occur in our cells all the time. It's how all humans grow and transform. The vast bulk of mutations is harmless. Therefore, they aren't avoidable.
What are Genetic Mutations?
The permanent transmissible difference in the genetic material. An individual exhibiting such a transformation. A point mutation is a mutation resulting from a modification in a single bottom pair in the DNA molecule.
Any alteration in a nucleotide succession of DNA is called a mutation. Chromosomal, dependent, and gene mutations are some of the illustrations of different kinds of genetic mutations.
So, Therefore, They aren't avoidable.
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A chimpanzee bone marrow cell, in prophase of mitosis, contains 48 chromosomes. How many chromatids does it contain?
Answers
If a chimpanzee bone marrow cell in prophase of mitosis contains 48 chromosomes, it contains a total of 96 chromatids (2 chromatids per chromosome).
Mitosis is the process by which cells divide to form two identical daughter cells. It is a fundamental process of cell division that occurs in all eukaryotic cells and is essential for the growth, repair, and reproduction of cells and tissues. In the prophase of mitosis, each chromosome consists of two identical sister chromatids that are joined together at the centromere. During mitosis, the sister chromatids will separate and move to opposite poles of the cell, forming two identical daughter cells with the same number of chromosomes as the original cell. This process ensures that each daughter cell receives an exact copy of the genetic material from the parent cell.
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What do you think of the butterfly effect. Use at least one example.
Answers
The butterfly effect is the concept in chaos theory that small initial differences in the starting conditions of a nonlinear system can lead to vastly different outcomes in the future, and one example of the butterfly effect is weather forecasting.
What is the butterfly effect?The butterfly effect is a concept that originated in the field of chaos theory, which studies the behavior of nonlinear systems that are highly sensitive to initial conditions. The idea of the butterfly effect comes from the analogy that the flap of a butterfly's wings in one part of the world could ultimately cause a hurricane in another part of the world, due to the complex interactions and feedback loops within the Earth's atmosphere. This concept has been applied to many different fields, including physics, biology, economics, and the social sciences.
Hence, the butterfly effect is the concept in chaos theory that small initial differences in the starting conditions of a nonlinear system can lead to vastly different outcomes, and an example of the butterfly effect is weather forecasting.
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Though we now see large cities across Southern and Eastern Asia as living with unbearable pollution, we forget that we experienced similar levels of pollution in the United States. In LA in WWII, the brown-colored smog grew so dense, people thought that Japanese had attacked them with chemicals. Many people who grew up there reported that it "hurt to breathe" and would get teary eyes on bad days. It was hard to get air pollution legislation in California and the U. S. Because the car industry didn’t want to be blamed and people were scared that new catalytic converters that removed [pollutant] from emissions would make cars too expensive. (Plus people didn’t understand the connection because auto emissions were clear and the smog was brown. ) Haagen-Smit, a biologist studying the flavor of pineapples, found the connection. But, the oil and automobile industries funded the Stanford Research Institute to discredit Haagen-Smit. At one point, someone offered to disprove Haagen-Smit’s findings by voluntarily sitting in his plexiglass smog chamber. This person got bronchitis. Haagen-Smit continued his research so that by the 1950’s the connection was clear. Activists groups sprang up and clamored for pollution control legislation. From this and other pollution crises, the Clean Air Act was born
Answers
Clean Air Act is necessary for the reduction of pollution in cities.
What is Clean Air Act?The Clean Air Act provides necessary tools to the Environmental Protection Agency which takes initiatives in order to protect our families from harmful pollutants that can cause various disease so we can conclude that Clean Air Act is necessary for the reduction of pollution in cities.
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the systems involved in water content regulation are ________.
Answers
Answer:
kidneys, hypothalamus, and endocrine glands.
Explanation:
I don't think theres anything to explain rlly hope this is correct tho
-)What must be present for the three stages of cellular
respiration to be exhibited?
Answers
Answer:
It needs oxygen in order to occur.
Explanation:
Cellular respiration is this process in which oxygen and glucose are used to create ATP, carbon dioxide, and water; ATP, carbon dioxide, and water are all products of this process because they are what is created.
The reactions of cellular respiration can be grouped into three stages: glycolysis (stage 1), the Krebs cycle, also called the citric acid cycle (stage 2), and electron transport (stage 3)
The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation—require oxygen in order to occur.
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Describe the type of substance that bioaccumulates better in
ecosystems.
A. Fat-soluble toxins are stored in body tissues and they bioaccumulate and magnify through
ecosystems.
B. Non-soluble toxins are stored in body tissues and they bioaccumulate and magnify through
ecosystems.
C. Very-soluble toxins are stored in body tissues and they bioaccumulate and magnify through
ecosystems.
D. Water-soluble toxins are stored in body tissues and they bioaccumulate and magnify through
ecosystems.
Answers
What hormone controls the change in life stage during metamorphosis?
a. Ecdysteroids
b. Juvenile hormone
c. Prothoracicotropic
d. Hormone Exogenous TH
Question 4 1 pts THe hardening of the new cuticle is called?
Answers
The hormone that controls the change in life stage during metamorphosis is ecdysteroids.
Ecdysteroids, specifically the molting hormone known as ecdysone, play a crucial role in regulating metamorphosis in insects and other arthropods. Metamorphosis is a process by which an organism undergoes a dramatic transformation in its body structure and physiology as it progresses through different life stages, such as from larva to pupa to adult.
During metamorphosis, the levels of ecdysone rise, triggering the molting process and initiating the transition between life stages. The ecdysteroids act as signaling molecules that bind to specific receptors in target tissues, leading to various developmental changes. They regulate the timing and coordination of cell growth, tissue differentiation, and the reorganization of body structures during metamorphosis.
While other hormones, such as juvenile hormone, also play important roles in insect development, ecdysteroids are primarily responsible for driving the major changes associated with metamorphosis. Their precise control and timing ensure the successful transition from one life stage to another, ultimately allowing insects to undergo remarkable transformations as they progress through their life cycle.
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1. SELECT ONE NATURAL HAZARD IN THE PICTURE AND SUGGEST WAYS ON HOW PEOPLE MUST BE PREPARED TO FACE THE HAZARD IN TERMS OF THE DIFFERENT PERSPECTIVES GIVEN BELOW
CHOSEN HAZARD: STORM SURGE
Pa help po pls... I really need help po. I'll mark brainliest po who answered po.
Example: Earthquake
Answers
Answer:
HAZARD: STORM SURGE
Explanation:
PHYSICAL
Keep a portable radio close by.
Build and equip your home to withstand flooding
Examine your home and grounds for any possible flooding hazards. Identify and remedy any vulnerabilities.
Sandbags are an excellent tool for keeping water out of your home. This method necessitates precise instructions from your local emergency personnel.
Learn how to cut off your home's gas and electricity. Local authorities may direct you to turn them off.
If you reside in a flood-prone location, avoid storing crucial documents in the basement. Keep them at a higher elevation, away from flooding.
PSYCHOLOGICAL
Find Out What Caused the Storm Surge
Learn about the area’s most vulnerable to storm surges.
Self-Protection and Property Protection
Evaluate your level of risk.
ECONOMIC
Get flood insurance coverage.
Make a list of your emergency supplies.
SOCIO-CULTURAL
Be patient, calm and co-operative and help others
Know the first aid treatments and help others accordingly
POLITICAL
The political head must be aware about the preparedness, precautions and protection. He must know about after steps also
The DM team should stay alert and educate public about the same
BIOLOGICAL
During storm surge biological resource like water gets contaminated and may affect health and other resources too.
we should keep stack of clean drinking water, and plan sustainably for the same.
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What are 2 important influences on enzymatic activity? What happens when these factors are significantly altered?
Answers
When an enzymes conformation is significantly altered because of PH or temperature variation, the enzyme may no longer catalyze reactions.
1. Use the term ore in a sentence.
Answers
Answer:
They used to extract iron ore from this site.
Explanation:
A forensic scientist is trying to find out the number of adenine bases in the DNA sample that he obtained from a crime scene.
What can he assume about the number of adenine?
The number of adenine bases will be equal to the number of guanine bases.
The number of adenine bases will be equal to the total of all the other bases.
The number of adenine bases will be equal to the number of thymine bases.
The number of adenine bases will be half of the number of cytosine bases.
Answers
Answer:
The number of adenine bases will be equal to the number of thymine bases.
Explanation:
A DNA molecule is a double-stranded molecule made up of nucleotide bases. There are four (4) nucleotide bases that make up the DNA viz: Adenine, Guanine, Cytosine, and Thymine.
According to Chargaff, who postulated the complementary base pairing rule that states that I the DNA molecule, Adenine base always hydrogen bond with Thymine base and Guanine base always hydrogen bond with Cytosine base i.e. A-T, G-C. Chargaff also found out that the amount of Pyrimidines (Cytosine and Thymine) are equal to one another, likewise the Purines(Adenine and Guanine).
According to Chargaff, the number of Adenine base equals the number of Thymine base that it pairs while the same occurs for Guanine and Cytosine pair. All bases total 1. Hence, the forensic scientists can assume that the number of Adenine base in the DNA is the same as the number of Thymine base.
Answer:
The number of adenine bases will be equal to the number of thymine bases.
Explanation:
Edge 2020, mark as brailiest please
NEED HELP ASAP!!! I have to get these done before the end of the week!!!!!
“You decide to go for a walk. You walk 8km to the north in 2 hours, then you walk 3 to the south in 1 hour. What is your total velocity of the entire walk?”
Answers
Answer:
32 because it is the velocity of it
Explanation:
yes
during photosynthesis, light energy is converted into energy stored in _____ in molecules
Answers
Answer: Chloroplasts
What is "the balance of nature"?
Answers
The balance of nature is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change (the size of a particular population, is one example) will be corrected by some negative feedback that will bring the parameter back to its original "point of balance" with the rest of the system.
Water is a common compound. It is a compound because it is made up of___ and oxygen.
A. Hydrogen
B. Carbon
C. Sodium
D. Chloride
Answers
Answer:
A
Explanation:
I know this will help :)
identification of high affinity tumor/self-antigen-specific tcrs from t cells with low tcr surface expression in healthy individuals
Answers
To identify high affinity tumor/self-antigen-specific T cell receptors (TCRs) from T cells with low TCR surface expression in healthy individuals by Isolation of T cells, Stimulation of T cells, Sorting of low TCR surface expression T cells, TCR sequencing and Generation of TCR-expressing cell lines.
1. Isolation of T cells: T cells can be isolated from peripheral blood samples of healthy individuals. This can be done using techniques like density gradient centrifugation or magnetic bead separation.
2. Stimulation of T cells: The isolated T cells can then be stimulated in vitro using tumor/self-antigens or peptide libraries derived from these antigens. This stimulation helps in expanding the population of T cells specific to these antigens.
3. Sorting of low TCR surface expression T cells: Flow cytometry can be used to sort T cells based on their TCR surface expression. Cells with low TCR surface expression can be isolated and collected for further analysis.
4. TCR sequencing: The TCR genes of the sorted T cells can be sequenced to obtain their TCR sequences. This can be done using techniques like next-generation sequencing (NGS) or Sanger sequencing.
5. Generation of TCR-expressing cell lines: The TCR sequences can be cloned into expression vectors and transfected into TCR-deficient cell lines, such as Jurkat cells. This generates TCR-expressing cell lines that can be used for functional assays.
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40 POINTS!! can someone actually MAKE a dichotomous key for this info? please i need to turn it in and i don't understand how to make them
- Can it produce its own food?
Yes: Go to 2
No: Go to 3
- Is the organism unicellular?
Yes: It is a yeast
No: It is a hydra
- Does the organism have hair?
Yes: It is a cat
No: Go to 4
- Is the organism unicellular?
Yes: It is a bacteria
No: The organism cannot be identified using this key.
Answers
Yes: Go to 3
vbnet
Copy code
Is the organism unicellular?
python
Copy code
Yes: It is a yeast
python
Copy code
No: It is a hydra
vbnet
Copy code
No: Go to 4
Does the organism have hair?
python
Copy code
Yes: It is a cat
vbnet
Copy code
No: Go to 9
Is the organism unicellular?
python
Copy code
Yes: It is a bacteria
cpp
Copy code
No: The organism cannot be identified using this key.
To use this key, you start at the first question and follow the instructions based on the answer. For example, if the organism can produce its own food, you would go to question 2. If the organism is unicellular, you would go to question 4. And so on, until you identify the organism.
The water cycle gets its energy from the ___?
Answers
Answer:
the sun
Explanation:
Neurosurgeons have severed the corpus callosum in human patients in order to reduce:_______
a. alzheimer's disease.
b. epileptic seizures.
c. neural plasticity.
d. reward deficiency syndrome.
Answers
Neurosurgeons have severed the corpus callosum in human patients in order to reduce epileptic seizures.
Corpus callosum :The corpus callosum is a substantial mass of more than 200 million myelinated nerve fibers that links and permits communication between the two hemispheres of the brain. Children who have experienced abuse have abnormalities in their corpus callosum.
Effect of cutting a person's corpus callosum down the middleThe brain must coordinate motions with both sides since each hemisphere governs the opposite side of the body. The corpus callosum serves as a conduit for this coordination. Signals cannot cross the corpus callosum, preventing communication between the two hemispheres. Serious coordination issues could result from this.
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