Beyond Identical or Fraternal: 6 Rare Types of Twins

The video explores the complexity of twinning, covering fraternal and identical twins, mirror image twins, conjoined twins, heteropagus twins, fetus in fetu, chimeric twins, and sesquizygotic twins. It discusses genetic and environmental influences, theories of twin formation, and the potential for learning about human development from these phenomena.

How do chimeric twins differ from regular twins?

What are sesquizygotic twins and how do they occur?

Discuss the potential implications of understanding twinning on human development.

What are some of the challenges researchers face in studying twinning?