Where are apocrine sweat glands the most abundant?
a. forehead
b. neck
c. axilla
d. palms of the hands
Ans: c. axilla
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A test cross of an organism of unknown genotype is done when the organism is crossed to an organism that is:
A. a heterozygote. B. a dominant homozygote. C. a recessive homozygote. D. All of the answer options are correct.
Which statement concerning root hairs is not correct?
A. Root hairs are tubular extensions of individual epidermal cells. B. A root hair is isolated from its epidermal cell with a cross wall. C. Root hairs generally live only a few days before being sloughed off. D. Root hairs increase the absorption of water and minerals. E. Root hairs are located in the zone of maturation of a root.
Which fishes feed on soft-bodied invertebrates and dead or dying fish and when threatened, secrete a slimy mucus?
a. lamprey b. hagfish c. skates d. rays e. ray-finned fishes
Embryonic stem cells cannot develop into ____ cells
a. muscle b. nerve c. blood d. placental e. other stem