A large-scale study of African elephant genetics in Tanzania reveals the history of elephant populations, how they interact, and what areas may be critical to conserve in order to preserve genetic diversity for species conservation. ...
Ecology
Nov 19, 2020
0
241
The prevailing theory until now suggests that regular gene flow through successful pairings between populations is the main barrier to their segregation into species. In recent years, however, theoretical and empirical work ...
Evolution
Nov 9, 2020
0
31
Fences are one of humanity's most frequent landscape alterations, with their combined length exceeding even that of roads by an order of magnitude. Despite their ubiquity, they have received far less research scrutiny than ...
Ecology
Sep 30, 2020
0
5
A new analysis of ancient genomes suggests that different branches of the human family tree interbred multiple times, and that some humans carry DNA from an archaic, unknown ancestor. Melissa Hubisz and Amy Williams of Cornell ...
Archaeology
Aug 6, 2020
8
9949
Mexican cavefish spend their entire lives in the dark. With no need for vision, many of them lost functional eyes. In more than 30 varieties of Mexican cavefish, the eyes stop developing as embryos grow into larvae. Although ...
Plants & Animals
Jun 2, 2020
0
150
Despite the traditional view that species do not exchange genes by hybridisation, recent studies show that gene flow between closely related species is more common than previously thought. A team of scientists from Uppsala ...
Evolution
May 4, 2020
0
259
The origin of an understudied hybrid population of poisonous frogs—highly endangered colorful animals that live deep in the Colombian jungle—is the result of natural breeding and not caused by wildlife traffickers moving ...
Plants & Animals
Feb 18, 2020
0
1469
Trinidadian guppies, ubiquitous in freshwater aquariums around the world, are no bigger than your thumb. But for Sarah Fitzpatrick, assistant professor in Michigan State University's Department of Integrative Biology and ...
Ecology
Jan 7, 2020
0
21
Growing up in Israel, Gili Greenbaum would give tours of local caves once inhabited by Neanderthals and wonder along with others why our distant cousins abruptly disappeared about 40,000 years ago. Now a scientist at Stanford, ...
Archaeology
Nov 7, 2019
2
1648
It's common knowledge that, through the process of natural selection, organisms adapt to their environments. But what happens when there are no barriers to gene flow and organisms are free-floating between extremely variable ...
Ecology
Sep 27, 2019
0
11
