Zygote is the diploid cell that results from the fertilization between an egg and a sperm. Etymology. Came from the Greek word âgametesâ meaning âhusbandâ and âgameteâ meaning âwife.â. Came from the Greek word âzygotosâ meaning âjoined or yoked or to yoke.
This is not causation, but facilitation after the fact. Stating that estrogen causes breast cancer is like saying fertilizer causes weeds. In a garden even weeds need some soil nutrients, and if these are completely removed, the weeds can't grow...but neither can the desired plants.
An overall increase in heart attacks among women is seen about 10 years after menopause. Heart disease is the leading killer of women. Estrogen Levels May Play a Role. A decline in the natural hormone estrogen may be a factor in heart disease increase among post-menopausal women. Estrogen is believed to have a positive effect on the inner layer of artery wall, helping to keep blood vessels flexible. That means they can relax and expand to accommodate blood flow.