Some people seeking abortions could face the death penalty under amended legislation Lawmakers in at least nine US states—Georgia, Idaho, Indiana, Kentucky, Missouri, North Dakota, Oklahoma, South ...

In the alternative, scientists could edit a newly conceived Asian elephant zygote directly. Either way, the next step would ...

Discussion in Preimplantational Stages of Pregnancy, Ciba Foundation Symposium (edit. by Wolstenholme, G. E. W., and O'Connor, M.), 414 (Churchill Ltd. London, 1965 ...

Identical twins arise from a single fertilized egg, or zygote, splitting into embryos with duplicate DNA, but what causes the split remains unknown. Zygote splitting was once thought ...