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zygote |
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zygoteOvum (egg) after fertilization but before it undergoes cleavage to begin embryonic development. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| But it can also act as an abortifacient, preventing implantation of an already fertilized ovum. Sgreccia, President of the Pontifical Academy for Life, said the "union of the feminine chromosome and the masculine chromosome contains in itself two pro-nuclei, and it is a fertilized ovum in which the process of fertilization has already begun. Modern birth control pills are estrogen, which inhibit implantation of the fertilized ovum into the uterus. |
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