A seals flippers has finger bones when a birds wing is just a bone connected to other joints.
The hormone produced by the placenta that stimulates the ovaries to continue producing estrogen and progesterone is called the follicle stimulating hormone. This hormone stimulates the ovarian follicle allowing the egg to grow thus producing continuous supply of estrogen and progesterone.
Answer:
Is a cell containing two complete sets of chromosomes one from each parent
