DNA is methylated on which nucleotides?

A) cytosine B) thymine C) uracil D) guanine E) adenine


Answer: A

Biology & Microbiology

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A genotype refers to

A) the alleles present in an individual. B) expression patterns of certain genes. C) the environmental components of a trait. D) the number of chromosomes that a person has.

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A(n) _____ disease has only recently been detected in humans, or has recently expanded its range

a. emerging b. epidemic c. pandemic d. sporadic e. plague

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What is the probability that a person would have cystic fibrosis if one of her parents was homozygous dominant and the other was a carrier for cystic fibrosis?

a. 0 b. 1:4 c. 1:6 d. 1:8 e. 1:16

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A drug that causes potassium to leak out of a neuron, increasing the positive charge on the outside, would __________.

A) cause the cell to release its neurotransmitter B) inhibit transmission of nerve signals by the neuron C) make it easier to trigger action potentials in the neuron D) act as a stimulant E) speed up nerve signals traveling the length of the cell

Biology & Microbiology