Daphnia does not have a large genome.

Example headline: Massive Daphnia genome leads to understanding gene-environment interactions

Photo by Paul Hebert

It’s a cool species, an important addition to the cadre of species whose genomes have been sequenced, it has a notably large number of genes (>30,000, according to the current annotation — rice has >40,000, by the way), and the lead author of the study was a grad student with me in the same lab. But Daphnia pulex does NOT have a big genome. It’s about 200Mb, slightly larger than Drosophila melanogaster, and about 1/15 the size of the human genome.


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