True or False: If B = the benefit of a behavior to a recipient, C = the cost of the behavior of the donor, and r = the degree of relatedness between the recipient and donor, then if rB > C, altruism can evolve
A. true
B. false
A
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Alleles conferring red plumage to male cardinals are common because red plumage
A. is helpful in attracting prey. B. makes males less susceptible to predation. C. is an example of genetic drift. D. is preferred by female cardinals in choosing a mate. E. allows male cardinals to easily identify each other.
Which of the following is one of the two main
functions of the nuclear envelope? a. provides residence for ribosomes b. allows separation of DNA from cytoplasm machinery c. provides total isolation of nuclear components d. enables faster cell division e. enables larger cell size
About a day after fertilization, the zygote undergoes ________, which is a rapid series of cell divisions
Fill in the blank(s) with correct word
Something that is administered to members of at least one participating group is known as the:
A. potential outcome. B. average treatment effect. C. treatment. D. treatment effect.