Which best describes traditional classification? It is based on shared characteristics.
It is based on evolutionary relationships.
It is called phylogenetic classification.
It is called cladistics.

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.