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

It makes sense that identical twins would have the exact same DNA, right? Spoiler alert: Not always! Here's why. How are identical twins formed? Identical twins (also called monozygotic or MZ twins) ...

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 ...

Evaluative effectiveness of follicular output rate, ovarian sensitivity index, and ovarian response prediction index for the ovarian reserve and response of low-prognosis patients according to the ...