monozygotic twins การใช้

• Monozygotic twins have double concordance rate for hysterectomy compared to dizygotic twins.
• Monozygotic twins, although genetically very similar, are not genetically exactly the same.
• This heritable variation is known from heritability studies based on monozygotic twins.
• In normal monozygotic twin development, one egg is fertilized by a single sperm.
• This study is not the first case of different phenotypes occurring between monozygotic twins.
• Monozygotic twins may also be created artificially by embryo splitting.
• Monozygotic twins split into two zygotes at some time very early in the pregnancy.
• Monozygotic twins can have markedly different epigenetic profiles.
• Parent-offspring pairs share 50 % of their genes IBD, and monozygotic twins share 100 % IBD.
• Another study in 2007 investigated the differences in brain structure between two adult, monozygotic twin females.
• Even monozygotic twins with the mutation may have variations in seizure frequency and degree of cognitive impairment.
• Moreover, since there are about 12 million monozygotic twins on Earth, the theoretical probability is not accurate.
• Another cause of difference between monozygotic twins is epigenetic modification, caused by differing environmental influences throughout their lives.
• Monozygotic twins always have different phenotypes.
• Even if employers are biased toward certain irrelevant characteristics, monozygotic twins should be affected by such biases equally.
• Epigenetic differences accumulating over the life-span may account for the incongruent differences in eating disorders observed in monozygotic twins.
• But if monozygotic twins separate early enough, the arrangement of sacs and placentas in utero is indistinguishable from dizygotic twins.
• Moreover, if the hypothesis is valid, the differences between monozygotic female twins must be greater than between male monozygotic twins.
• Thompson co-authored a widely cited twin study on communication disorders which found higher concordance in monozygotic twins than dizygotic twins.
• Is there any genetic difference ( something like a minor mutation ), even small, to tell apart two monozygotic twins?