If you wanted to compare the relative abundance of mRNA transcribed for a specific gene by two different strains of bacteria, you could perform

a. a Southern blot.
b. a Northern blot.
c. site-directed mutagenesis.
d. either a or b.


Answer: B

Biology & Microbiology

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The chemical bond connecting one nucleotide with the next along one strand of a DNA molecule is called a  

A.  glycosidic bond. B.  hydrogen bond. C.  phosphate bond. D.  phosphodiester bond. E.  peptide bond.

Biology & Microbiology

Describe the establishment and maintenance of the lysogenic state in the lambda phage

What will be an ideal response?

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______ could not be involved in gene flow.  

A.  Hybridization between neighboring populations B.  Gametes dispersed by ocean currents C.  Disassortative mating within a population D.  Wind-blown pollen E.  Zygotes dispersed by ocean currents

Biology & Microbiology

Based on fossil evidence, which of the following existed the longest ago?

a. Homo habilis b. Homo erectus c. Australopithecus africanus d. Australopithecus afarensis e. Homo neanderthalensis

Biology & Microbiology