Early stage embryos created by IVF. New work reveals the key genes that cause the kickstart development of the embryo. (Getty Images). New work by scientists in the U.S. and China shows how a ...

With each week of pregnancy, your baby-to-be is developing in leaps and bounds. In the early stages, they are called a zygote. They then progress to an embryo, fetus, and finally, baby. You might hear ...

American Journal of Botany, Vol. 62, No. 2 (Feb., 1975), pp. 105-115 (11 pages) This investigation begins with the late zygote and traces ultrastructural development to the late globular stage of the ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...

Scientists show how a fertilized egg cell, or zygote, hits 'reset' so that the newly formed embryo can develop according to its own genetic program. New work by scientists in the U.S. and China shows ...