It was my third pregnancy, and when my bump grew faster, I assumed it was because I had done this before. It turned out I was pregnant with twins. They refused to take a DNA test now as adults to find ...

Metastable epialleles may sound like complex science, but they help explain why identical animals can still look and act differently. For years, scientists asked why two mice with identical DNA could ...

After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...

Doctors sometimes err in their diagnosis of twins’ zygosity (twin type). However, it is very important for twins and their families to know if twins are identical or fraternal. Among the many reasons ...

Wilson Lutah, Angeline Mathias, Sharon Mitekwa, Mevies Imbaya, Melon Lutenyo, Rosemary Khaveleli and Richard Olukhakha when Lancet Kenya released DNA results of the twins yesterday. [Wilberforce ...

Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

These identical twins had people confused. In 2015, Amy and Becky Glass were 47-year-olds completely addicted to being identical twins. They even ate identical meals and slept in the same room. In ...

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It’s an age-old question: is nature or nurture more responsible for how we turn out in life? Scientists have long believed that some combination of our genes and environment – our diets, lifestyles, ...

These mice were genetically identical, so any differences in methylation had to come from epigenetic factors. Global DNA study identifies 175,000+ variants affecting human diversity and disease risk ...