David M. Hillis
@doublehelixranch.bsky.social
Evolutionary biologist, phylogeneticist, and owner of the Double Helix Ranch. Professor at University of Texas at Austin; Director of UT Biodiversity Center
The question of how to distinguish species boundaries from intraspecific geographic variation is now more of an issue than ever in the genomic age. www.pnas.org/doi/10.1073/...
Distinguishing species boundaries from geographic variation | PNAS
In an era of unprecedented biodiversity loss, the need for standardized practices
to describe biological variation is becoming increasingly importa...
www.pnas.org
May 6, 2025 at 4:22 AM
The question of how to distinguish species boundaries from intraspecific geographic variation is now more of an issue than ever in the genomic age. www.pnas.org/doi/10.1073/...
Congratulations to the newest members elected to the U.S. National Academy of Sciences in Evolutionary Biology today: Beth Shapiro, Fred Nijhout, and Jonathan Pritchard! Also International Member Valeria Souza from Mexico!
April 29, 2025 at 6:48 PM
Congratulations to the newest members elected to the U.S. National Academy of Sciences in Evolutionary Biology today: Beth Shapiro, Fred Nijhout, and Jonathan Pritchard! Also International Member Valeria Souza from Mexico!
"As long as I have any choice in the matter, I shall live only in a country where civil liberty, tolerance, and equality of all citizens before the law prevail.”—Albert Einstein
April 26, 2025 at 7:03 PM
"As long as I have any choice in the matter, I shall live only in a country where civil liberty, tolerance, and equality of all citizens before the law prevail.”—Albert Einstein
Very interesting and important panel about how we can increase and facilitate distribution of all the new renewable energy production at #NAS162.
April 26, 2025 at 2:30 PM
Very interesting and important panel about how we can increase and facilitate distribution of all the new renewable energy production at #NAS162.
It is warm enough on this late November day at the Double Helix Ranch for this Red-Striped Ribbon Snake to be swimming around, looking for Cricket Frogs.
November 24, 2024 at 7:52 PM
It is warm enough on this late November day at the Double Helix Ranch for this Red-Striped Ribbon Snake to be swimming around, looking for Cricket Frogs.
Happy 165th birthday for the publication of The Origin of Species, and people thinking deeply about evolutionary trees. Darwin's notebook entry about phylogenesis, show here, is older, at 187 years, and became the basis for the only figure originally published in The Origin.
November 24, 2024 at 3:50 PM
Happy 165th birthday for the publication of The Origin of Species, and people thinking deeply about evolutionary trees. Darwin's notebook entry about phylogenesis, show here, is older, at 187 years, and became the basis for the only figure originally published in The Origin.