what happens if nondisjunction occurs?

too many gametes are produced.
mitosis cannot take place.
no gametes are produced.
a gamete receives too many or too few copies of a chromosome.

The cluster of developing cells from conception until birth is called an

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins