Darwin's theory of natural selection is considered a paradigm shift—a theory that has wide-ranging effects. Describe some of the advantages that this theory offered scientists once it was developed
What will be an ideal response?
ANS:
Answers will vary, but can include: unifying subdisciplines of the biological sciences; natural as opposed to supernatural explanations for the diversity of life; and provides a theory that can explain the similarities and differences between life forms.
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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
RF1 and RF2 are active during _______
A. initiation B. elongation C. termination D. peptidyl transfer
You insert a fragment of sheep DNA into a plasmid containing an AmpR gene. You transform bacteria with the recombinant plasmid, and plate the cells on growth media containing the antibiotic ampicillin. Each colony on the plate arose from _____ that ____ to ampicillin.
A. a single bacterium; is sensitive. B. many bacteria; are sensitive. C. many bacteria; are resistant. D. a single bacterium; is resistant.
Mitosis is involved in
a. asexual reproduction and growth. b. asexual reproduction and genetic diversity. c. sexual reproduction and growth. d. sexual reproduction and genetic diversity.