In ____, a pair of nonidentical alleles affecting

two phenotypes for a given trait are both
expressed at the same time in heterozygotes.
a. pleiotropy
b. polygenic inheritance
c. complete dominance
d. codominance
e. a multiple allele system


D

Biology & Microbiology

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The cellular changes associated with long-term potentiation are localized to:

A. the postsynaptic cell. B. the presynaptic cell. C. both pre- and postsynaptic cells.

Biology & Microbiology

In female humans, what is the function of LH?

a. it stimulates the releases of GnRH from the adrenal cortex b. it stimulates the maturation of ovarian follicles c. it stimulates cells in the follicle to secrete estrogens d. it encourages the completion of meiosis I and cytoplasmic division e. LH functions to do more than one of these

Biology & Microbiology

Typically, the rate of ____________ exceeds the rate of ____________ , resulting in the net formation of tissue fluid.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The human population will be in the stable equilibrium phase when the number of births ____ the number of deaths. 

A. is greater than B. equals C. is less than D. is half

Biology & Microbiology