The process of crossing over which begins in prophase I of meiosis usually results in which condition?
A. nondisjunction
B. four diploid gametes
C. increased genetic diversity in the gametes
D. decreased genetic diversity in the gametes
Ans: C. increased genetic diversity in the gametes
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a. carbon dioxide b. methane c. water vapor d. chlorofluorocarbon e. nitrous oxide
__________ is the science of naming and classifying
species. Fill in the blank(s) with the appropriate word(s).
Which of the following animals does not use lungs to acquire oxygen?
A) whale B) frog C) bird D) butterfly
Choose the true statements about the human and tiger pufferfish genomes.
_____ Genes regulating the basic cellular metabolism are conserved in both human and pufferfish genomes. _____ About 25% of the human genes have no counterpart in the pufferfish genome. _____ Being ancestral to humans, the pufferfish genome has more repetitive DNA than the human genome does. _____ The pufferfish genome has twice the amount of DNA as the human genome does.