How might sperm be affected if nondisjunction occurs in a male? Sperm will not be able to fertilize an egg.
Sperm will contain only Y chromosomes.
O Sperm will contain an X chromosome and a Y chromosome.
Sperm will contain only X chromosomes.

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

How does human environment effect the biosphere