What is a disadvantage of asexual reproduction?
a. It does not introduce variety into populations
b. Finding a mate is not required.
c. It is not an efficient process.
d. It can create high density of populations.
a
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You are investigating a clinical disorder in one of your patients. You discover that the patient has an autoimmune disease that targets and destroys fibroblasts. This disorder would most likely affect
A) fiber production by the cells, as occurs with blood clotting. B) annulus formation. C) hyluronate production in the joints. D) collagen production. E) all of the above
X chromosome inactivation results in the
a. total inactivation of both X chromosomes. b. inactivation of only the paternal X chromosome. c. inactivation of only the maternal X chromosome. d. inactivation of either the paternal X chromosome or the maternal X chromosome. e. nonrandom inactivation of X chromosomes in the initial cells of tissues
An enucleated egg cell ________
A) contains an extra copy of a gene B) has two nuclei C) lacks a nucleus D) cannot be used for cloning E) is a type of stem cell
In plants and some fungi, individuals that form the diploid generation are called ____
a. spores b. sporophytes c. gametophytes d. spermatozoa e. ova