Gene flow can speed up AND slow down adaptation
a. true
b. false
Answer: a. true
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Manta rays, sting rays, and eagle rays are similar to lampreys in that they have cartilaginous skeletons. How are they different from lampreys?
A. They have closed circulatory systems. B. They have gills. C. They have jaws. D. They have bony fin lobes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the evolution of the jaw? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which statement about G protein is false?
a. Its subunits can separate. b. One subunit is a GTPase. c. One subunit binds GTP. d. One subunit binds GDP. e. One subunit binds ATP.
You are a nutritional scientist and discover an organic molecule that is water-soluble and is essential to good health but does not appear to be manufactured by the human body. It is most likely a
A. mineral. B. carbohydrate. C. vitamin. D. polypeptide.
____________ are microorganism that are not included in phylogenetic trees because they are acellular.
Fill in the blank(s) with the appropriate word(s).