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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.
1 sty 2020 · For example, a dizygotic triplet gestation denotes a triplet pregnancy produced from a monozygotic pair plus a singleton. The incidence of monozygosity is completely unknown, because the a priori number of zygotes is unknown.
10 lip 2024 · Animals that can produce monozygotic (MZ) twins or quadruplets. ( A ) The zebrafish janus mutant exhibits the separation of two groups of blastomeres prior to the eight-cell stage, resulting in the development of two distinct spheres (yellow) that ultimately lead to the formation of conjoined fish.
7 sty 2021 · We first estimated the number of discordant postzygotic mutations in pairs of monozygotic twins (381 twin pairs; 2 triplets) by comparing sequence variation in somatic tissues (1 adipose, 204...
14 kwi 2015 · Monozygotic and dizygotic twin studies investigating the relative roles of host genetics and environmental factors in shaping gut microbiota composition have produced conflicting results. In this study, we investigated the gut microbiota composition of a healthy dichorionic triplet set.
Zygosity refers to the genetic makeup of the pregnancy, or the number of zygotes that become fertilized leading to a multiple birth. Twins, in rarer cases triplets, quadruplets (four), quintuplets (five), arising from a single fertilized ovum are termed monozygotic (MZ).
13 sty 2021 · A new study in Nature Genetics used whole-genome sequencing of monozygotic twins, their parents, partners and offspring to identify and characterize early developmental mutations, as well as the ...
