For a very rare inherited disease, the frequency of heterozygotes in a population is
A) approximately half that of the dominant allele.
B) approximately double that of the recessive allele.
C) very close to 0.
D) near 1.
B) approximately double that of the recessive allele.
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Select the phosphorylation reaction
a. glucose + fructose ? sucrose + H2O b. glucose + ATP ? glucose-P + ADP c. glucose-P + fructose ? sucrose + Pi d. glucose + glucose ? maltose e. sucrose + H2O ? glucose + fructose
Superantigens
A. are potent stimulators of T cells. B. include erythrogenic toxin. C. include streptolysin O. D. induce production of tumor necrosis factor. E. All of the choices are correct.
Filamentous phage
A. only infect E. coli that have pili. B. only infect E. coli lacking pili. C. infect E. coli regardless of the presence of pili. D. do not infect E. coli.
What is the first step of a muscle contraction?
What will be an ideal response?