Monozygotic vs dizygotic twins

4,878 views · Published 28 August 2015 · 5:28 · Indexed 1 November 2026

Channel: Nikolay's Genetics Lessons · 2015 · Education

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To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.

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