Does the following fitness array reflect heterozygote inferiority or superiority?
A1A1 A1A2 A2A2
fitness 0.70 1 0.80
Calculate the equilibrium frequency of p for the given fitnesses.
Is this a stable or unstable equilibrium?
In: Biology
Illustrate and label the interactions between its hypothetical model of a substrate molecule bound in the active site of an enzyme.
In: Biology
In: Biology
In: Biology
An individual that is heterozygous for two independent traits has the potential to produce gametes with more combinations of genotypes for those two traits than an individual that is only heterozygous for one of the two traits.
True
False
In: Biology
How does the presence of a nuclear envelope affect gene expression in eukaryotes? But i need all the details about the question so please explain it in details thank you so much <3
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Create a table that shows the relationships between monomers, polymers, and types of bonds, for sugars, proteins, nucleic acids, and lipids.
Write two well-composed, logical sentences for each of the four molecules above. Write one sentence for dehydration reactions, and one sentence for hydrolysis reactions.
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3. Describe what it means for an organism to be triploblastic. What structures of the internal anatomy of a clam might lead you to conclude that a clam is triploblastic?
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Discuss the flow of electrons in the non-cyclic pathway.
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In the early 1700's Edward Jenner demonstrated and was credited with the concept of vaccination. the theory/mechanism surrounding how the immunity to smallpox was achieved is referred to as "cross reactivity. Explain why we don't see much of this anymore or why it might not be exploited more.
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In: Biology
The Scenario: Your friend Bob asks you to sign a Change.org petition to encourage your Congressman to propose a bill that would outlaw all stem cell research and treatments. The reason given for this petition is that embryonic stem cells come from aborted fetuses. Assignment: Write a response to your friend explaining what stem cells are and where they come from, making sure to clarify the factual misconception(s) in the petition. Your response needs to accurately explain stem cell biology and be well supported. Don't forget to review the rubric! Please note: a large portion of your grade on this paper will be based on how well you identify the misconception(s) your friend has, and how well you correctly
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1. When a cell is respiring, carbon dioxide is in ________ concentration inside the cell, causing it to diffuse out, whereas ________ is in high concentration outside the cell, causing it to diffuse in.
2.which of the following contains the most oxygen? blood entering the alveoli, blood entering the left atrium, blood leaving the right ventricle, blood leaving the tissue.
3.What effect does smoking have on the movement of mucus in the respiratory tract?
4.Frogs use their skin as a respiratory organ. True or False?
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Leopold was clearly offering an alternative definition of, and orientation for, conservation. Though it sounds simplistic, for Leopold, conservation required the establishment of a state of harmony between humans and nature, which implied a commitment to two principles: that we strive to understand how the natural world functions; and that we practice precaution in our use of the natural world. These two principles are well reflected in the following excerpts from a couple of Leopold’s better known essays.
Health is the capacity of the land for self-renewal. Conservation is our effort to understand and preserve this capacity. - 'The Land Ethic' (1949)
The last word in ignorance is the man (sic) who says of an animal or plant: "What good is it?" If the land mechanism as a whole is good, then every part is good, whether we understand it or not. If the biota, in the course of aeons, has built something we like but do not understand, then who but a fool would discard seemingly useless parts? To keep every cog and wheel is the first precaution of intelligent tinkering. - 'Round River' (1953)
This call to think ecologically was loudly heard again later in the century with the publication of Rachel Carson’s 1962 book, Silent Spring, which publicized the impacts of agricultural pesticides on wildlife and human health. While Carson’s book was largely read as a warning to humanity, consistent with the shallow, human-centred, form of environmentalism that emerged in the late 1960s, her real intent was arguably to challenge us to recognize our existence within ecosystems and the utter foolishness of non-ecological thinking.
Activity Thinking Ecologically
you are asked to think about how the use of a highly persistent and broad spectrum insecticide like dichlorodiphenyltrichloroethane (DDT) shows ignorance of ecological thinking? Put another way, why would an ecologist think that it makes little sense to use DDT? Can you come up with three (3) points?
Please do little research and provide the reference (thank you )
In: Biology