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21 cze 2015 · From the considered model, the probability of monozygotic twins is found to be (1/2) K, and we discover that the probability of monozygotic quadruplets, or triplets as in the case of the death of an embryo, is (1/8) K, where K is a species-specific integer
10 lip 2024 · Monozygotic (MZ) twins are believed to arise from the fission of a single fertilized embryo at different stages. Monochorionic MZ twins, who share one chorion, originate from the splitting of the inner cell mass (ICM) within a single blastocyst.
The enhanced potential of the zygote to produce monochorionic twins — to about 5.6% of the cases — after blastocyst compared with cleavage stage trans-fers has been suspected to be the result of extended in vitro culture (Behr et al., 2000; Milki et al., 2003).
7 sty 2021 · Here we show that monozygotic twins differ on average by 5.2 early developmental mutations and that approximately 15% of monozygotic twins have a substantial number of these early developmental...
1 sty 2020 · If two genetically distinct populations of cells were formed before repulsion, another distinct cellular differentiation event would have to occur in at least one of the resultant cell populations at the same embryological state in order to produce monozygotic triplets.
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...
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).
