In triploblastic organisms, the inner layer of cells forms the muscles of the body wall
1.True
2.False
2
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In breast tumors the presence of multiple copies of the HER2 gene is correlated with a more aggressive cancer
Which of the following methods would allow comparison of different cancer cells to determine which have more copies of the HER-2 gene? A. PCR with primers that contain restriction sites B. RT-PCR C. quantitative PCR D. PCR with conventional primers E. All of these choices are correct.
The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an example of ____
a. convergent evolution b. morphological divergence c. analogous evolution d. morphological convergence e. distal modification
In terms of male parental care, the prevalence in animals groups goes in this order: _____ (most prevalent to least)
a. birds - mammals - fishes b. mammals - birds - fishes c. mammals - fishes - birds d. reptiles - mammals - fishes e. mammals - fishes - birds
The trait of connected earlobes is considered a
a. beneficial trait. b. harmful trait. c. neutral trait. d. dominant trait. e. significant trait.