Prenatal diagnosis is available for all of the following disorders EXCEPT

A) Down syndrome. B) AIDS. C) cystic fibrosis. D) sickle-cell anemia.


B

Biology & Microbiology

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A human cell with a total of 23 chromosomes would be considered:

A. haploid. B. diploid. C. polyploid. D. euploid.

Biology & Microbiology

A tuna is a ___ fish

a. ray-finned b. lobe-finned c. cartilaginous d. jawless e. invertebrate

Biology & Microbiology

When DNA fragments from different sources are mixed together, they begin combining with each other due to

A) complementary base pairing. B) the action of restriction enzymes. C) a change in pH. D) electrical currents present in the mixture. E) a change in temperature.

Biology & Microbiology

Bacterial cell walls are primarily composed of which of the following?

A) phospholipid protein B) protein C) carbohydrate D) peptidoglycan

Biology & Microbiology