Does the average mutation rate in humans accurately describe the pattern of mutations across the genome? Select all that apply
A. No. Some sites (hotspots) are more
mutable than others.
B. No. Mutation rates differ between males
and females.
C. No. Mutation rates differ between germ
cells and somatic cells.
D. No. Mutations rate vary with age.
E. No. Mutation rates vary with location -
they are higher in some parts of the world
than in others.
A,B,C
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Some biologists argue that transposable elements provide benefits to a given species. Which of the following does not describe a potential benefit offered by transposable elements?
A. Increases genetic variation. B. Inserts into functionally important genes. C. Codes for a gene that confers antibiotic resistance. D. Codes for a gene that increases survival.
Which antioxidant is naturally found in cocoa?
A) vitamin A B) beta-carotene C) flavonol D) vitamin C
Respond to the following statements with reference to the five components of the gastrointestinal tract listed below.
A. Microbes in this organ help ruminants break down cellulose. B. Enzymatic digestion of proteins begins in this organ. C. Bile salts, bile pigments, cholesterol, and lecithin are stored by this organ. D. Chemical digestion of food is completed here. E. Short tubular projection of the large intestine. F.
Which of the following mechanisms are causal explanations for bird song?
A. Young males learned their song from their fathers. B. Songs are used by males to attract a mate. C. The ritualization of the vocalization became species specific. D. Air passing through a bird's specialized singing organ, the syrinx, vibrates the surrounding organs.