Population databases are necessary to interpret DNA fingerprints because alleles occur with different frequencies in different populations.

A bell curve describes the distribution of phenotypic classes of a polygenic trait.

Which of the following proteins affects body weight?

Class 2 MHC  proteins  display internally derived proteins and are found on all cells.

What is the term for the specific parts of an antigen that are immunogenic?

The figure below illustrates ______ in plants.

Which of the following is exemplified by a pea tendril contacting a string or wire and coiling around it for support?

You trim two different houseplants. The first houseplant becomes bushier, but the pruning does not affect the growth of the second plant. A possible explanation is ______.

Several tomato plants are growing in a small garden plot. If soil water potential were to drop significantly on a hot summer afternoon, which of the following would most likely occur?

Briefly explain two homologous (resulting from common ancestry) and two analogous (resulting from similar constraints) structures or processes shared between animals and plants.