In salamanders, allele R (red spots) is dominant and allele r (no spots) is recessive. RrxRr
1. Explain/describe the phenotype of the parents
2.Explain/describe the phenotype of the RR offspring
3.Explain/describe the phenotype of the Rr offspring.
4.Explain/describe the phenotype of the rr offspring

not sure if this what   you'r looking for would be percent composition

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.