Monday, September 27, 2010

When be the thought that a zygote divides at the horizontal of one or two cell to form equal twins, discovered?

Identical twins are born when an embrio consisting of only one or two cell undergoes fission to form two seperate embrios to develop into a set of equal twins Galton (1875) states that [identical] twins are the results of a single ovum with two "germinal spots."
Verschuer, surrounded by his 1939 presentation to the London Royal Society, presented zygotic division during the implantation phase as a new proposition.
Boomsma's recent article in Nature reviews historic twin studies.
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