What happens when light energy excites electrons in photo system ll

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Can a trait be both polygenic and have multiple alleles? explain why or why not.