Allele frequencies in a gene pool may shift randomly and by chance. What is this random shift called?

A) Genetic drift

B) Directional selection

C) Gene flow

What is one of the products of cellular respiration?

Agents that cause damage during embryonic or fetal development are called:

What pollutant forms when automobile emissions react with oxygen gas and ultraviolet light? A). sulfur dioxide B). ozone C). radon D). carbon dioxide

Why is it useful to have lots of capillaries inside each of the villi? (villi are things on the inner surface of the small intestine)

What happens when sunlight bends as it passes through a prism? UV rays start appearing blue. White light becomes invisible. Infrared rays separate into different colors. White light separates into different colors.

The study of the eating habits of grizzly bears is in which field of biology

What functional groups define the two different ends of a dna strand?

True or false: animals contribute most of the organic remains that form humus

What would cause a person to have headaches from the sun only when not wearing a hat?

When in the cell cycle would you find sister chromatids?