A group of individuals of the same species occupying a given area is a ____
a. population
b. species pool
c. gene pool
d. genetic drift
e. group divergence
ANSWER: a
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Nondisjunction could be the reason for a red-eyed male offspring from a cross between a red -eyed male and a white-eyed female
A. true B. false
In an autosomal dominant disorder such as
Huntington disease, the probability of two parents with the gene passing this disorder on to a child is a. 0%. b. 25%. c. 50%. d. 75%. e. 100%.
A horse has a diploid number (2n) of 64 and a donkey has 2n = 62. The hybrid of these two species, mules, have 2n = 63 and are sterile. Why are mules sterile?
A) Mules cannot physically mate with each other. B) Horses are not able to form new species. C) Mules are not true hybrids. D) One chromosome is unpaired and fails to divide properly during meiosis. E) Mules cannot physically mate with horses and donkeys.
Which leaf tissue would be most directly affected by a nonfunctional rubisco enzyme?
A. Mesophyll tissue B. Lower epidermis C. Stoma D. Upper epidermis E. Cuticle