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.
Despite estrogen's new status on the NIEHS listing, not all forms of the hormone are carcinogenic. And that has called into question the route cancer-causing estrogens take in stimulating tumors. A new study by Mailman researchers shows that more than one sequence of steps is necessary before estrogen can cause cancer.