Or, you can go to a complete listing of all terms we currently define in this lexicon, each of which is linked directly to a definition. PhRMA offers free access to the Lexicon in order to help to educate the public, facilitate informed policy discussions, and enable precise understanding and communication related to genetic medicine. The joining of a sperm and egg cell is called fertilization.
Zygotes are diploid and undergo cell division to become an embryo.
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