Ahypothetical population has two alleles for a gene: a and a. in a random sample of 50 individuals, 20 are homozygous for a, 10 are homozygous for a, and 20 are heterozygous. what is the frequency of a?

What happens when the cell copies its chromosomes

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

Introducing minvasive species to an ecosystem results in an increase in biodiversity is it true or false