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A multiple pregnancy from a single zygote is called monozygotic, from two zygotes is called dizygotic, or from three or more zygotes is called polyzygotic.
The processes that give rise to monozygotic (MZ) twins remain elusive. This article describes various theories of MZ twinning that have been examined over the years, although they continue to be speculative.
Twins, in rarer cases triplets, quadruplets (four), quintuplets (five), arising from a single fertilized ovum are termed monozygotic (MZ). The first identical quintuplets known to have survived their infancy were the Canadian Dionne quintuplets, all five of which survived to adulthood ( Fig. 3.1 ).
7 sty 2021 · This analysis was restricted to blood and buccal samples with sampling dates, resulting in 766 individuals from 380 biologically independent monozygotic twin pairs and 2 monozygotic triplets.
13 sty 2021 · Looking at 381 monozygotic twin pairs and 2 triplets, the authors first estimated the number of postzygotic mutations present in one twin but not the other.
14 paź 2021 · Monozygotic (also known as ‘identical’) twins arise when a fertilized egg splits in two before implantation — but the mechanisms that control this have been elusive, and it is widely thought to...
8 sty 2016 · The official term for identical twins (or triplets) is monozygotic multiples, where an egg is fertilised and then splits up, leaving two embryos with the same DNA.
