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 ...

PREGNANT Jesy Nelson has revealed she is facing a serious health scare which has left her needing two scans a week on her ...

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 ...

They tested female twin pairs (136 monozygotic, MZ, and 148 dizygotic, DZ) for pitch recognition ability, and applied genetic model-fitting techniques to ascertain the genetic and environmental ...

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 ...