Which of the following statements is true about artificial selection?
A. Breeders can control which animals mate.
B. Breeders can control what mutations will appear in the offspring.
C. Both A and B are true.
D. Neither A nor B is true.

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient