Very often, genes that are found on the X chromosome are not found on the Y chromosome. If the X chromosome has a recessive allele, what will be the phenotype of this male?

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.