Which is the last structure to contact sperm before it leaves the body?

In a laboratory population of flies, the female flies are gray and the males are yellowish gray. Biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to

What Two units measure air pressure

A 16-year-old girl who has become sexually active asks the nurse, "what's the most effective way to prevent a pregnancy?" which method of preventing pregnancy should the nurse tell her is most effective?

After which event would you say that evolution has occurred? (A) An animal's white winter coat is replaced by a darker coat in the spring. (B) An allele frequency in a population changes over time.

Many people use antimicrobial soap to kill bacteria on their hands. However, overuse may actually increase the risk of infection. How could this occur?

Oxidative phosphorylation generates atp producing adp which catalyzes the phosphorylation of

How is sexual reproduction different from asexual reproduction?

Changes in the DNA sequence that affect the expression of genetic information are called A) infiltrations B) mutations C) replications D) transformations

Coral reefs in the Caribbean are sometimes damaged by hurricanes. Of the two types of coral shown, which do you think is more resistant to storm damage? Explain.

What part of the government oversees monitoring them in the environment, and what happens if a business or organization emits them at above allowable levels?