The expected phenotypic ratio of a dihybrid cross is 9:3:3:1
1:2:2:4:2:2:1:1:1
1:1:1:1:1:2:2 1:4:1:1
8:2:4:1:1

What type of competition exsist between two species. turtles and fish

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

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false