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While in the uterus, the baby first endures a very brief zygote stage, then the embryonic stage, which is marked by the development of major organs and lasts for approximately eight weeks, then the fetal stage, which revolves around the development of bone cells while the fetus continues to grow in size. [20]
Complete expulsion of the baby signals the successful completion of the second stage of labour. Some babies, especially preterm infants, are born covered with a waxy or cheese-like white substance called vernix. It is thought to have some protective roles during fetal development and for a few hours after birth.
Per Holm Knudsen (born 18 December 1945 in Copenhagen) is a Danish writer, teacher and psychotherapist.He is the author of The True Story of How Babies Are Made, a detailed and colorfully illustrated children's book that chronicles love, marriage, conception, pre-natal growth, and birth.
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An embryo is the initial stage of development for a multicellular organism.In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell.
Image credits: amil “I think parents get embarrassed talking to their teens and pre-teens about where babies come from,” Vicky shared. “So they find it difficult to broach the subject.
Many nations outlawed it, while a few scientists promised to make a clone within the next few years. The first hybrid human clone was created in November 1998, by Advanced Cell Technology . It was created using SCNT; a nucleus was taken from a man's leg cell and inserted into a cow's egg from which the nucleus had been removed, and the hybrid ...