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Biology

Genomic Basis of Adaptive Radiation in African Cichlid Fish

Quick fact

African cichlid genomes are rich in gene duplications and transposable elements, and their rapid diversification is driven more by changes in gene regulation than by changes in the protein-coding genes themselves.

Why this is interesting

In the murky waters of Africa's Great Lakes, a group of fish has evolved into thousands of species—more than all the birds and mammals combined. How can so many diverse forms arise from a single ancestor in just a few million years? The answer may lie hidden in their genomes.