Is two different alleles for a gene, while two identical alleles for a gene is

a. homozygous; heterozygous

b. heterozygous; homozygous

c. heterozygous; equilibrium

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

How does human environment effect the biosphere

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food