The Identification of Gene Products in a Gene Library. Restriction enzymes (to cut the DNA) and gel electrophoresis (to separate the resulting fragments) can be used to produce a physical map of DNA segments in a process known as restriction mapping.
Estrogen pills may be prescribed to lessen the symptoms of menopause, like hot flashes. Estrogen is used in birth control pills to prevent conception. The thickness of the endometrium changes along with the female's menstrual cycle. Older women may have an estrogen deficiency as they begin menopause.
Specifically, synthetic estrogen in the pill works to: 1  Stop the pituitary gland from producing follicle stimulating hormone (FSH) and luteinizing hormone (LH) in order to prevent ovulation. 2  Support the uterine lining (endometrium) to prevent breakthrough bleeding mid-cycle.