Читать книгу Child Psychology - Jean-Pascal Assailly - Страница 60
1.15.2. How can we explain the differences between two monozygotic twins?
ОглавлениеMonozygotic twins are described as identical, but this is a simplification and there are usually differences between them.
These differences may come from:
– genetic factors (alteration of genes by DNA mutations, or of chromosomes by postzygotic mitotic errors, polymorphisms);
– epigenetic factors (differential DNA methylation and histone modifications, X chromosome inactivation, genomic imprinting);
– mitochondrial inheritance (mitochondrial DNA mutations);
– differences in intrauterine environments.
