X-linked dominant disorders are caused by mutations in genes on the X chromosome, one of the two sex chromosomes in each cell. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell is sufficient to cause the disorder.
Common Questions and Answers about Estrogen patch types. vivelle-dot. I did not want to go through menopause or life with no estrogen at age 35, so I opted for the estrogen hormone therapy. I chose to go with the Estradiol patches.
Generic estrogen-only or progesterone-only pills fall at the lower end of the cost range, while brand name estrogen-plus-progesterone pills or patches such as Prempro the CombiPatch, fall in the middle and some bioidentical estrogen vaginal creams, such as Estrace Cream, can fall on the high end.