A promoter is a regulatory region located at the ____

a. beginning of a gene
b. end of a gene
c. beginning of a chromosome
d. centromere of a chromosome
e. end of a chromosome


a

Biology & Microbiology

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Which of the following describes the purpose of the polymerase chain reaction?

a. increasing the number of copies of DNA b. separating charged molecules by size and charge c. opening cells to extract DNA in a gelatinous mass d. cutting DNA sequences in a predictable manner

Biology & Microbiology

Divergence may lead to

a. genetic drift. b. speciation. c. balanced polymorphism. d. gene flow. e. genetic equilibrium

Biology & Microbiology

It is hypothesized that ________ associations may have helped plants colonize dry land

Fill in the blank(s) with correct word

Biology & Microbiology

At the start of a study, 200 spotted owls lived in an old-growth forest patch in western Oregon. During the next year, a biologist tracking the birds observed that 25 new birds hatched and 5 died. What was the growth rate (r) for this year?

A) 25 B) 5 C) 20 D) 0.1 E) 200

Biology & Microbiology