The structure of a DNA molecule is analogous
to a
a. paper clip.
b. ladder.
c. fork.
d. rope.
e. coiled spring
B
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The morphology of plants is determined
A. by cell division at the tip of the shoots and cell elongation at the tip of the roots B. by cell division at the tip of the roots and cell elongation at the tip of the shoots C. by cell elongation at both the tip of the shoots and the roots D. by cell death (apoptosis) along the radial axis E. by cell division at both the tip of the shoots and the roots
Individuals with the progeria syndrome
a. number about one in eight million. b. will have an accelerated rate of aging. c. usually die in their teens. d. carry a mutant gene for a nuclear structural protein. e. are all of these.
A particular gene that controls seed coat color in peas also determines the susceptibility of these peas
to a particular disease. This situation is referred to as: a. varigation. b. additive dominance. c. codominance. d. pleiotropy. e. incomplete dominance.
How would two unrelated individuals with the same color skin compare?
A) They would have similar alleles for melanin production. B) They would have similar alleles for repetitive DNA segments. C) They would have similar alleles for nose shape. D) They would be no more likely to have similar alleles for any gene than any two random individuals.