As shown in Figure 1, by 60 years of age, the cumulative incidence of diabetes among monozygotic twins who were initially discordant for diabetes was 65% (95% confidence interval [CI], 39 to 91 ...

Twins of all kinds account for 90% of multiple births. There are many types of multiple births – monozygotic, dizygotic, and the very rare sesquizygotic twins. Here’s a closer look at what ...

Age-related cataracts are a major public health problem. The relative importance of genes and environment in the causation of nuclear cataracts, the most common form of age-related cataracts, is ...

How do we know? Twin studies. Researchers compare some behavior or trait in a set of pairs of monozygotic (identical) twins and a set of pairs of dizygotic (fraternal) twins. In theory ...

Multiple pregnancies are categorised as either monozygotic or dizygotic based on the number of gametes involved. Monozygotic, or identical twins, result from the fertilisation of a single egg by a ...

Scientists have been working to determine the genetic sequencing of schizophrenia using identical or monozygotic twins. Just like snowflakes, no two people are alike, even if they're identical ...

The same way two babies do. Fraternal or dizygotic twins (which occur more than twice as often as identical or monozygotic twins) are really just siblings that share a gestation. These multiples ...

We present a case of monozygotic twins who are discordant for breast cancer and chemotherapy exposure (ie, one twin contracted breast cancer and underwent chemotherapy, and the other had no breast ...