A testcross is a mating of an individual with an unknown genotype and an individual that Select one:
a. is homozygous dominant.
b. is homozygous recessive.
c. has a known genotype.
d. is a wild-type.
e. is heterozygous.
b. is homozygous recessive.
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How do dormancy and hibernation differ?
a. Dormancy is a response to stressful environmental conditions, while hibernation can occur at any time. b. Hibernation is a seasonal strategy, while dormancy is a response to any stressful environmental condition. c. During dormancy, activity is greatly reduced, but the same is not true of hibernation. d. Hibernation is a temporary condition, while dormancy usually lasts for longer periods.
Methicillin is related to penicillin, which was isolated from the bread mold Penicillium. Based on this, which of the following can you conclude is different between S. aureus and Penicillium?
a. The composition of their plasma membrane b. Their type of genetic material c. The structure of their organelles d. The composition of their cell wall e. The enzymes in glycolysis
A cloned animal is best described as having
Pigs have feet with toes that do not touch the ground. These are examples of
a. a vestigial structure b. something in the process of evolving c. homologous traits d. a deleterious mutation e. biological gradualism