2021-09-30

Scientists have a new understanding of identical twins: genetic information is slightly different from ordinary people

By yqqlm yqqlm

Scientists have investigated genetic predisposition and environmental exposure as the causes of MZ twins, but these studies have not determined what causes MZ twins</ p>

Scientists have a new understanding of identical twins: genetic information is slightly different from ordinary people </ P >

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p > in contrast, researchers know some details of another type of twins, namely non identical twins (DZ), which leads to a significantly different process of such twins. DZ twins arise from double ovulation, while identical twins come from an embryo that divides into two parts</ p>

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p > it is not known why a single embryo is divided into two. The researchers have found that epigenetic information in chromosomes does differ between identical twins and others. The difference is not found in the DNA code itself, but in the chemical markers associated with it. In the study conducted by boomsma researchers at Vrije University (VU) in Amsterdam, twin registries from the Netherlands, the United Kingdom, Finland and Australia were used</ p>

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p > the researchers measured the methylation levels of more than 400000 DNA points in 6000 pairs of twins. They found that methylation levels at 834 locations in identical twins were different from those in non identical twins. The researchers say this is a major discovery. This study is the first time to find biomarkers of twins in humans</ p>

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p > project scientists say that the explanation for identical twins is obviously not in the genome, but in the epigenome. Epigenomes are described as control elements that determine how genes are adjusted and how strongly they are expressed, located around the building blocks of DNA. The researchers believe that this study can better understand the congenital malformations that occur more frequently in MZ twins</ p>