In E. coli, the lac operon controls the

a. Breakdown of lactose
b. Production of lactose
c. Breakdown of glucose
d. Production of glucose


Ans: a. Breakdown of lactose

Biology & Microbiology

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To determine the evolutionary history of a gene, geneticists assume that the most prevalent alleles in a population

A) are dominant. B) have mutated the most. C) are the oldest. D) are the most recently acquired.

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A duplicated chromosome consists of two sister chromatids

Indicate whether the statement is true or false

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These muscles would contract when a person goes into a walk-in freezer: ________

Fill in the blank(s) with correct word

Biology & Microbiology

ATG is a DNA triplet that codes for an amino acid. Which mRNA codon will pair with the ATG triplet?

A. ATG B. GTU C. TAC D. UAC

Biology & Microbiology