Which best describes how these nucleotides are used during DNA replication?
A) They are joined to form proteins.
B) They proofread the DNA to prevent errors.
C) They are added to growing DNA strands following base-pairing rules.
D) They are enzymes that break the hydrogen bonds, allowing the DNA molecule to unzip
Answer: C) They are added to growing DNA strands following base-pairing rules.
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Distinguish an ecotype from a species, and provide an example of an ecotype
What will be an ideal response?
If you placed a red blood cell in a hypotonic solution, you would predict that its volume would ____ while the solute concentration in its cytoplasm would _____.
A. increase, increase B. increase, decrease C. decrease, increase D. decrease, decrease E. decrease, not change
Morphological divergence
a. is the change in body form from that of a common ancestor. b. is the change in body form to resemble that of an ancestor. c. is no change in body form over time. d. does not occur in related species. e. only occurs in unrelated species
The monotremes are an unusual group of mammals because they:a
lack mammary glands. b. lack hair. c. lay eggs. d. have pouches. e. exhibit parthenogenesis.