What kind of mutation has no effect on an organism's ability to survive or reproduce?
A. a deleterious mutation
B. a neutral mutation
C. an advantageous mutation
D. an adapted mutation
B
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What is the function of the enzyme DNA polymerase?
A. to build a strand of DNA using DNA as a template B. to build a strand of DNA using a polypeptide as a template C. to build a strand of mRNA using DNA as a template D. to build a strand of mRNA using mRNA as a template E. to build a polypeptide using DNA as a template
Which of these characteristics would most likely discourage self-pollination in a flower with both stamens and pistils?
A. many more stamens than pistils B. long pistils and short stamens C. long stamens and short pistils D. wind pollination E. determinant plants
Ribose has five carbon atoms, of which three are asymmetric. What is the maximum number of stereoisomers that may exist for ribose?
A) 2 B) 4 C) 6 D) 8 E) 10
Crossing over
A) is followed immediately by separation of each of the chromatids. B) prevents genetic recombination. C) results in only one exchange per homologue. D) increases variability in gametes. E) occurs between sister chromatids.