The greater the polyglutamine expansion in the huntingtin gene (greater than 35 CAG trinucleotide repeats), the greater the chance for developing Huntington disease
a. True
b. False
Indicate whether the statement is true or false
True
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Primary productivity is affected by the availability of:
A. sunlight. B. water. C. nutrients. D. sunlight and nutrients. E. sunlight, water, and nutrients.
During spring time in Maine, male moose often enter a cow pasture and begin calling to the female cows. The moose may even try to mount the female but the male genitalia do not fit properly inside the female genitalia. This is an example of
A. mechanical isolation. B. temporal isolation. C. habitat isolation. D. behavioral isolation. E. gametic isolation.
In a neuron at rest, the membrane is most permeable to
A. potassium. B. sodium. C. chloride. D. calcium. E. magnesium.
The molecule that functions as a corepressor for the trp operon is
A. glucose. B. cAMP. C. tryptophan. D. CAP. E. lactose.