Monozygotic twins with discordant karyotypes are extremely rare and usually involve the sex chromosomes. Discordance for autosomal aneuploidy has been reported for chromosomes 13 and 21.

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 ...

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 ...

Here's the scoop on the various types of twins and multiples. Identical twins, also called monozygotic twins, develop from a single fertilized egg, or embryo. Depending on when that embryo splits ...

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 ...

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 ...

When only one of two identical twins suffers from schizophrenia – the incurable mental disorder of reoccurring episodes of psychosis, a general misperception of reality, paranoia, hallucinations ...