Posted: Jan 04, 2023 2:36 am
by Spearthrower
Calilasseia wrote:
The first surprise the paper has in wait for those not aware of this fact, is that domesticated Goldfish are tetraploid organisms. The diploid ancestors produced offspring that had two copies of the genome, which then differentiated so that the tetraploid genome is asymmetric.

I did indeed not know that: did tetraploidy come about through artificial selection or was it already in their wild carp ancestors?