Genetic research that reconstructed the past population dynamics of the cave bea...
WASHINGTON - Genetic research that reconstructed the past population dynamics of the cave bear, a prominent prehistoric denizen of Europe, implicates Homo sapiens rather than climate cooling in the Ice Age extinction of these brawny plant-loving beasts.
Using this, they detected a population downturn roughly 50,000 years ago coinciding with the arrival of our species in eastern Europe and then a dramatic decline starting about 40,000 years ago coinciding with the spread of Homo sapiens throughout Europe. It ultimately went extinct about 20,000 years ago.
The steep population decline identified in the study predated climate cooling associated with the most recent Ice Age, said paleogeneticist Verena Schuenemann of the University of Zurich in Switzerland.
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
UCI develops humanized mice to study human brain cells' role in Alzheimer's diseaseScientists at UC Irvine say they developed a way for human brain immune cells to grow and function in mice — a breakthrough that could give an 'unprecedented view of crucial mechanisms' contributing to Alzheimer's and other brain diseases long before symptoms emerge.
Leer más »
Child sex abuse victims sue Catholic Church, other groups in New York after change in lawDozens of people in New York state who were sexually abused as children sued ins...
Leer más »
Societies are tearing apart, but they can be brought togetherWe must reduce the social distance between people and focus on shared human traits, says Adam Waytz, author of “The Power of Human”
Leer más »