Many, though not all, mollusks have a shell. What secretes the shell?
A) The foot
B) The mantle
C) The radula
D) The visceral mass
B
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Taq polymerase is
A. a reverse transcriptase. B. an RNA polymerase. C. from E. coli. D. a heat-stable DNA polymerase from Thermus aquaticus. E. an RNA polymerase AND from E. coli.
A certain type of congenital deafness in humans is caused by a rare autosomal recessive gene. In a mating involving a deaf man and a deaf woman, could some of the children have normal hearing? Explain your answer
What will be an ideal response?
When a runner or other long-distance athlete hits the "wall," the individual is experiencing oxygen debt in muscle cells. In those cells, the pyruvate generated in glycolysis would be expected to be converted to
A) fat. B) lactic acid. C) glucose. D) carbon dioxide. E) water.
Red-green color blindness is inherited as a sex-linked recessive trait. The gene is found on the X chromosome. Can a man with normal color vision father a daughter who is red-green color-blind?
A) Yes, if the woman with whom he mates is red-green color-blind. B) Yes, if the man is heterozygous for red-green color blindness. C) No, he can't (unless there is a mutation). D) No, the expression of the trait skips a generation.