Model released. Identical twins. Identical (monozygotic) twins develop when a single fertilised ovum divides completely and equally at an early stage of the embryonic phase. Identical twins share the same placenta,are always of the same sex and look remarkably alike. Nonidentical twins come instead from two separate ova which have been fertilised by two different spermatozoa. They may be of different sexes and look quite different | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Parker, Gary |
Taille de l’image : | 3596 px × 2480 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : | - |