In a small population of cockroaches living in your kitchen, only a few roaches mate in one year. This can lead to random changes in allele frequency in the population through ________
A. genetic drift.
B. migration.
C. mutation.
D. selection.
E. nonrandom mating.
Answer: A
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Dinosaurs flourished during the
a. Archaean b. Paleozoic c. Mesozoic d. Cambrian e. Cenozoic
The ________ pathway in lambda phage leads to integration of viral DNA with that of the host, while the ________ pathway leads to induction of progeny viruses
A) lytic, lysogenic B) invasive, replicative C) repressive, inductive D) lysogenic, lytic E) replicative, lysogenic
What types of amino acids are most responsible for the binding of DNA to histones?
A. Hydrophobic amino acids B. Polar amino acids C. Positively charged amino acids D. Negatively charged amino acids
In conjugation, transformation, or transduction, the recipient bacteria is most likely to accept donor DNA
A. from any source. B. from any species of bacteria. C. from the same species of bacteria. D. only through plasmids. E. from any source AND only through plasmids.