Meiosis ensures a constant amount of genetic material in future generations by reducing the number of chromosomes in the daughters cells to that of a parent cell.

What makes the yardstick test a direct measurement of reaction time? a. the further the yardstick falls, the slower the reaction time. b. yardsticks have numerical markings for length. c. yardsticks are designed to measure reaction time. d. all of the above select the best answer from the choices provided.