Which of the following is a result of nonrandom mating within a population?
a. gene flow
b. genetic drift
c. adaptation
d. inbreeding
Ans: d. inbreeding
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Alzheimer disease has been shown to be related to ____
a. alcoholic fermentation in the brain b. lactate fermentation in the brain c. increased brain metabolism d. decreased brain metabolism e. increased mitochondrial enzyme activity
Pyruvate can be a substrate or product involved in each of the following except
A) fermentation. B) aerobic glycolysis. C) gluconeogenesis. D) amino acid biosynthesis. E) Pyruvate can be involved in all of the above.
A transposable element composed of an antibiotic resistance gene, a recombinase gene, and inverted repeats is identified in a bacterial genome. This element can be any of the following except ________.
A. a composite transposon B. an integrated conjugative element C. an insertion sequence D. a unit transposon
Which extra-embryonic membrane gives rise to blood vessels in the umbilical cord?