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Of the following, which is the last step in the production of a recombinant DNA plasmid?   A) cloning B) using DNA ligase to join DNA fragments C) cutting the gene of interest into fragments D) allowing the reproduction of the bacterium bearing the recombinant plasmid

The expressed (coding) regions of eukaryotic genes are called ________.   A) caps B) promoters C) exons D) introns

Which of the following is the best definition for recombinant DNA?   A) DNA that results from bacterial conjugation B) DNA that includes pieces from two different sources C) an alternate form of DNA that is the product of a mutation D) DNA that carries a translocation

Which of the following is an example of sexual selection?   A) Bacteria evolve resistance to antibiotics. B) Cheetahs experienced a population bottleneck. C) Peahens choose to mate with peacocks that have the most beautiful tails. D) Female butterflies have a higher survival rate than male butterflies.

Which of the following can act as a vector to introduce new genes into a cell?   A) primers B) ligase C) restriction enzymes D) plasmids

The region of DNA where RNA synthesis begins is the ________.   A) start codon B) promoter C) stop codon D) terminator 

In a DNA double helix, adenine pairs with ____ and guanine pairs with ____.   A) cytosine… thymine B) guanine… adenine C) thymine… cytosine D) uracil… cytosine

Which of the following are homologous?   A) the forelimb of a dog and the hindlimb of a cat B) the forelimb of a dog and the forelimb of a cat C) wings of a butterfly and wings of a sparrow D) the mouth of a mosquito and the beak of a hummingbird

How many amino acids are common to all living systems?   A) 10 B) 20 C) 30 D) 100

Which of the following is NOT a requirement of natural selection?   A) differential reproductive success B) overproduction of offspring C) genetic variation D) gene flow