The shape of the dna molecule is called a double . the backbone of dna is made of molecules and phosphate molecules. the "rungs" of dna are made of bases.

RNA is not right its sugar but everything else is good

the answer to your question is sperm

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.