University of Southern Denmark researchers find nurture, not nature, influences tattoo propensity in twins, debunking genetic ...

Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...

Other traits, such as personalities and allergies, can also diverge. Fraternal twins, also called dizygotic twins, develop when two sperm fertilize two eggs separately because the mother has ...

The research surveyed more than 1,500 parents of monozygotic and dizygotic twins aged 3 to 9. It found that when one twin was typically developing and the other had a developmental condition ...

identical twins provide evidence of a high degree of genetic influence on human development. For fraternal or dizygotic twins, they develop from two different eggs fertilized by separate sperm ...

Linkage in 181 dizygotic twin pairs yielded a 6.93 lod score. The PPARG C→T substitution allele was far less common in monozygotic twins than in dizygotic twins. Dizygotic heterozygosity was ...

Monozygotic twins are genetically identical, whereas dizygotic twins share on average 50% of their autosomal genes. Of course, parents and offspring, and non-twin siblings, are equally related ...

However, assisted reproductive techniques, such as IVF, are also considered to contribute to twin or multiple pregnancies. A 2010 study found that 2% of women who are part of a dizygotic twin pair ...