Mmastodon ScienceBiology first seen 3 d ago, last 1 h ago, peak #7
Sesquizygotic twins: the rare 'semi-identical' siblings
Original: 🧬 Sesquizygotic twins are real, the "1.5 identical" kind. One egg was fertilized by two sperm, then split into two peopl
Sesquizygotic twins, sometimes described as '1.5 identical', occur when a single egg is fertilized by two sperm before splitting into two embryos. The resulting twins share all of their mother's DNA but only about 78% of their father's. Only two confirmed cases exist: one in the United States in 2007 and one in Australia in 2019, identified during pregnancy.
Why now: The extreme rarity of this phenomenon, with only two confirmed cases worldwide, makes it a fascinating curiosity for science-minded readers.
sesquizygotic twinsUnited StatesAustralia
Rank over time, top of the chart is #1. 57 snapshots from 3 d ago to 1 h ago.
Evidence
- 🧬 Sesquizygotic twins are real, the "1.5 identical" kind. One egg was fertilized by two sperm, then split into two people. Identical on the mom's side, about 78% shared on the dad's. Only two confirmed cases: US 2007, and Australia 2019, spotted in the womb. Rare enough that a… · jcrabapple@dmv.community · 8
API: https://socialmediatrends-api.osmike.com/v1/trends/1550553