The enzyme that synthesizes messenger RNA from a DNA template is
A) DNA polymerase.
B) RNA polymerase.
C) reverse transcriptase.
D) ligase.
B) RNA polymerase.
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Which of the following pairs are NOT homologous?
A. the wing of a bat and the front flipper of a whale B. the wing of a bat and the wing of a chicken C. the foreleg of a turtle and the front flipper of a whale D. the wing of an insect and the wing of chicken E. both the wing of an insect and chicken and the wing of a bat and chicken
The food of most baleen whales consists of:
a. benthic invertebrates. b. nektonic fishes. c. algae. d. plankton. e. detritus.
Many plants devote significant resources to growing colorful, fragrant flowers filled with nectar. What does this illustrate the importance of?
A. Outcrossing B. Nutrient storage in seeds C. Long-term nutrient storage in perennial plants D. Chemical signaling among plants
What are the two principle factors that lead to microevolution?
A. Horizontal gene transfer and evolutionary mechanisms B. New genetic variation and gene duplication C. New genetic variation and evolutionary mechanisms D. Natural selection and migration