Chromosomes are composed of dna. true or false.

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

What is the difference between a scientific hypotheses and a scientific theory?

The dna sequence ttg is changed to tcg and produces a new protein. which type of mutation is this? missense nonsense silent frameshift