The method of determining the exact nucleotide order of a sequence of DNA is called ________ and is now an automated process that involves fluorescent dyes and automated machines.

A. DNA sequencing
B. fluorescent in-situ hybridization (FISH)
C. DNA microarrays
D. polymerase chain reactions (PCR)


Answer: A

Biology & Microbiology

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Mutagenic chemicals that ____ and are incorporated into DNA or RNA during synthesis are called base analogs

a. resemble nucleotides b. resemble genes c. resemble amino acids d. cause deletion mutations e. cause frameshift mutations

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If E. coli bacteria are grown in the absence of lactose, then the repressor will

A. not bind the operator, allowing transcription of the lac operon genes. B. bind the operator, allowing transcription of the lac operon genes. C. not bind the operator, preventing transcription of the lac operon genes. D. bind the operator, preventing transcription of the lac operon genes.

Biology & Microbiology

Which layer of sedimentary rock is closest to

the surface?

a. Bright Angel Shale b. Muav limestone c. Redwall limestone d. Manakacha Formation e. Kaibab Limestone

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________ can be a symptom of hypothyroidism

A) Goiter B) A low sperm count C) Graves' disease D) Hyperactivity

Biology & Microbiology