🧬🐟 The #Amazon #molly, an all-female #fish from #Texas and #Mexico rivers, has cloned itself for over 100,000 years – long past the predicted extinction deadline.

A 2026 #Nature #study by researchers at University of #Missouri and LMU #Munich shows the fish uses “gene conversion,” a #DNA repair trick, to erase bad #mutations and spread good ones without #sex.

👉 https://www.sciencealert.com/scientists-finally-know-how-an-all-female-fish-keeps-cloning-itself

#genetics #evolution #cloning #parthenogenesis #genome #geneconversion #reproduction #biology #science

Scientists Finally Know How an All-Female Fish Keeps Cloning Itself

It may sound too bizarre to be true, but the Amazon molly (Poecilia formosa), a fish that inhabits rivers, lakes, and swamps in Mexico and Texas, exists over much of its range in populations that are 100% female.

ScienceAlert