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STR analysis is a DNA profiling technique that makes use of the fact that different people have ________.   A) different numbers of repeats of short DNA sequences at certain sites in the genome B) different alleles for many genes in the genome C) different restriction fragments D) different CODIS DNA sequences

The total collection of alleles in a population at any one time makes up that population’s ________.   A) gene pool B) genotype C) heterozygote frequency D) allele frequency

Genetic drift is the result of ________.   A) natural selection B) chance C) a large gene pool D) environmental variation

In the Hardy-Weinberg formula, what does 2pq represent?   A) frequency of the dominant allele B) frequency of heterozygotes C) frequency of the recessive allele D) frequency of the homozygous dominants

A vaccine works by ________.   A) inhibiting bacterial reproduction B) stimulating the immune system to develop lasting defenses C) killing cells infected with a virus D) preventing translation of mRNA molecules that code for disease-causing proteins

Of these steps, which occurs 1st in the production of a recombinant plasmid?   A) cloning B) cutting DNA into fragments C) isolation of a plasmid from a bacterium D) reproduction of the engineered plasmid in bacteria

The world’s first genetically engineered pharmaceutical product was ______.   A) humulin B) HGH C) tPA D) EPO

The DNA codon AGT codes for an amino acid carried by a tRNA with the anticodon ________.   A) TCU B) AGU C) TCA D) AGT

After replication, ________.   A) each new DNA double helix consists of two old strands B) each new DNA double helix consists of one old strand and one new strand C) each new DNA double helix consists of two new strands D) one new DNA double helix consists of two old strands and the other new DNA double helix consists of two new strands

What protects mRNA from attack by cellular enzymes?   A) RNA splicing B) the removal of exons C) the lack of RNA-digesting enzymes in the cytoplasm D) a cap and tail