What are the two immediate benefits to sexual reproduction in unpredictable envi-ronments according to Kondrashov?
What will be an ideal response?
ANS:
Recombination may produce at least some variants that succeed in the changed envi-ronment; genetic variation may reduce competition among offspring.
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Are genetically modified organisms safe for humans to consume?
A. No, genetically modified organisms are not safe for humans to consume. B. We do not currently have any data on whether genetically modified organisms are safe for humans to consume. C. Yes, genetically modified organisms have been found to be extremely safe for humans to consume, and research is no longer assessing this question. D. Yes, short-term research on animals seems to indicate that genetically modified organisms are safe for humans to consume.
Connective tissues include all the following EXCEPT
a. cartilage. b. blood. c. bone. d. fat. e. outer skin.
Which of the following transposable elements are found in eukaryotes but not in prokaryotes?
A) IS elements B) Families of autonomous and nonautonomous elements C) Retrotransposons D) Ty elements E) B, C, and D only
How did humans colonize the New World?
A. Christopher Columbus and a host of other explorers were the first to colonize the Americas. B. Humans drifted across the Atlantic on primitive canoes. C. Early humans walked across a land bridge during periods of lowered sea level. D. Humans were present during the break-up of Gondwana.