Strong selection against the dominant phenotype
a. reduces the equilibrium frequency of the dominant genotypes
b. completely eliminates the dominant genotypes
c. has no effect on the dominant genotypes
b
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A person who has two identical alleles for a particular gene is ________ for that gene.
A) dominant B) heterozygous C) homozygous D) positive
Consider an erythrocyte with an internal glucose concentration of 0.1 mM and an external glucose concentration of 5 mM. Each of the following is true about GLUT1 transport of glucose across the plasma membrane into the cell except
A) Keq is always equal to 1. B) ?G depends on the concentration gradient. C) inward movement is exergonic. D) ?G° is always equal to 0. E) the rate of GLUT1 transport is faster than that of simple diffusion.
The typical waking and sleeping cycles of most people can be described as:
a. crepuscular. b. nocturnal. c. diurnal. d. lunar. e. annual
Which of the following is not a hypothesized advantage of sexual reproduction?
A. It helps remove deleterious genes. B. It reduces the chances of producing offspring less fit than the parent. C. It recombines different advantageous alleles and separates them from harmful ones. D. It creates novel combinations of genes. E. It increases resistance to parasites.