By the end of the first week following conception,the fertilized egg now has approximately 100 cells and is known as the _____.

Question

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At the end of the first week following conception, the fertilized egg has undergone several cell divisions and forms a hollow ball of cells called a blastocyst. This structure will eventually implant in the lining of the uterus and develop into an embryo. The terms neonate and fetus refer to later stages of development.

By the End of the First Week Following Conception,the Fertilized