Which of the following is used as biochemical evidence for evolution? * a. Similarities in bone structures
b. Similarities in DNA
c. Fossil record
d. Similarities in eye function

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse