Considering the principle of complementary base pairing, you would expect an equal ratio of which two nitrogenous bases in a DNA molecule?
A) adenine and guanine
B) thymine and cytosine
C) cytosine and guanine
D) guanine and thymine
E) uracil and adenine
C) cytosine and guanine
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What step in DNA replication precedes the pairing of complementary bases?
a. polymerization of DNA b. separation of the two strands c. joining of the two strands d. mitotic division e. formation of the histone core
Energy that is not converted to useful energy is usually given off as
A) radioactivity. B) light. C) electricity. D) heat. E) entropy.
The biological species concept is favored by systematists because when reproductive isolation evolves, there is a barrier to gene flow that allows for the isolated groups to generate their own unique divergent traits.
a. true b. false
In wolves, gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). The genes that control these traits are located on different chromosomes. The alpha male of the pack has the dominant phenotype for both traits and is heterozygous for both traits. The alpha female has brown eyes and a black coat; she is heterozygous for eye color. Which option represents gametes that would be made by the alpha female?
A. Bb and gg B. B; b; and g C. Bg and bg D. BG; Bg; bG; bg E. None of the answers are correct.