A person who inherited the allele combination aa is ____

a. homozygous dominant
b. homozygous recessive
c. heterozygous
d. codominant
e. dominant


ANSWER: b

Biology & Microbiology

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Which substance is cycled between organic matter and abiotic reservoirs?

A) fat B) carbon C) protein D) nucleic acid

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Calcium ions are normally in higher concentrations outside most living cells than within cells. Which of the following processes is most likely responsible for this condition?

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Refer to the figure above. Which of the structures in the figure causes the two strands of DNA to separate?

A) A B) B C) C D) D

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