If a section of DNA contains 13% thymine then there is ___ adenine.

Each codon is made up of ___ base(s).

Codominance in humans is displayed by people with ________.

Continental drift affects biogeography.

The structure of DNA was determined by

Assortive mating occurs when individuals mate with those of a similar phenotype.

The nitrogen containing base pairs of DNA are held together with phosphate bonds.

Which is NOT a major function of the genetic material?

____ occurs when one species splits into two species or when one species transforms into another over time.

For natural selection to occur,