zygote
the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo ○ Cells divide and produces some 100 identical cells within the first week, then the cells begin to differentiate ○ Less than 1/2 survive ○ After 10 days, it attaches to the mother’s uterine wall, beginning approximately 37 weeks ○ inner cells become embryo -In early stages, zygotes can split into two and become twins
A zygote is a single cell formed by the fusion of two gamete cells during fertilization, resulting in a diploid cell with a full set of genetic material. In humans, the zygote is formed when a sperm cell enters an egg cell during sexual reproduction, and the resulting zygote undergoes cell division and differentiation to eventually form a fully-developed organism. The zygote is the first stage of embryonic development and is crucial in determining the genetic makeup and characteristics of the future organism.
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