Poikilotherms
What will be an ideal response?
have internal temperature fluctuations, tracking external environment
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Which mutation in DNA would lead to the change of a single amino acid in a protein?
A. a frameshift B. a missense mutation C. a nonsense mutation D. one base insertion E. one base deletion
Aerobic exercise affects muscle cells by
1.increasing the number of mitochondria. 2.increasing the size of mitochondria. 3.increasing the number of capillaries supplying muscle tissue. 4.increasing nourishment to the cells and waste removal from the cells. 5.all of the choices
The probability of producing a phenotypically normal child by two parents who are carriers for an
autosomal recessive disorder is a. 50 percent. b. 0 percent. c. 100 percent. d. 25 percent. e. 75 percent.
Elucidation of the histone code might
A. allow us to turn specific genes on or off. B. lead to chromatin remodeling. C. allow us to control translation. D. allow the determination of nucleosome composition.