Disassortative mating may be beneficial because:

a. it will likely reduce the probability of a deleterious recessive being expressed.
b. it will maximize the genetic diversity in the offspring.
c. it makes it easier to find a mate.
d. A and B.
e. All of the above.


D

Biology & Microbiology

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In early ancestors of the modern giraffe, longer necks allowed animals to reach higher tree branches as food.  This would lead to ____ in the ancestral giraffe population.  

A.  disruptive selection B.  directional selection C.  sexual selection D.  genetic drift E.  stabilizing selection

Biology & Microbiology

XYY males tend to

a. have reproductive problems. b. be slightly retarded. c. have learning disabilities. d. be sterile. e. develop normally.

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Refer to the accompanying figure. In which region will the osmolality of the filtrate be at the lowest value?

a. 3 b. 5 c. 6 d. 9 e. 10

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When electrons are removed from nutrients via an oxidation reaction, the coupled reduction reaction may be

A) NAD+ ? NADH. B) NADH ? NAD+. C) FAD ? FADH2. D) either FAD ? FADH2 or NAD+ ? NADH. E) either NAD+ ? NADH or NADH ? NAD+.

Biology & Microbiology