Читать книгу Neurobiology For Dummies - Frank Amthor - Страница 47

Organisms typically have two copies of each gene, one inherited from each parent. Each parent also has two copies of each gene, and passes along to its offspring a single copy by a (nearly) random selection of their two genes. This gene is found on a chromosome present in either the mother’s eggs or the father’s sperm. When the egg and sperm join, they form a double set of genes again.