MeSH definition : Two offspring from the same PREGNANCY. They are from two OVA, fertilized at about
the same time by two SPERMATOZOA. Such twins are genetically distinct and can be of
different sexes.;
Two offspring from the same PREGNANCY. They are from two OVA, fertilized at about
the same time by two SPERMATOZOA. Such twins are genetically distinct and can be of
different sexes.
http://campus.cerimes.fr/histologie-et-embryologie-medicales/enseignement/embryo_7/site/html/1.html http://campus.cerimes.fr/histologie-et-embryologie-medicales/enseignement/embryo_7/site/html/cours.pdf true France French educational course embryology twins, dizygotic twins, monozygotic cleavage stage, ovum embryonic structures embryonic development