Gene flow is accomplished by ________.   A) migration B) sexual recombination C) mutation D) natural selection

“Sticky ends” are produced as a result of the action of ________.   A) PCR B) DNA ligase C) restriction enzymes D) bacterial plasmids

Which of the following is a population?   A) the termites infesting your house along with the microorganisms living in their guts B) all of the termites that have ever lived C) all organisms living in your house D) the termites infesting your house

Translation converts the information stored in ________ to ________.   A) DNA… RNA B) RNA… a polypeptide C) DNA… a polypeptide D) RNA… DNA

Gel electrophoresis separates DNA fragments on the basis of differences in their ________.   A) A:C ratio B) length C) G:T ratio D) pH

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