For most of our evolutionary history—for most of the time anatomically modern humans have been on Earth—we've shared the planet with other species of humans. It's only been in the last 30,000 years, the mere blink of ...
Archaeology
Dec 19, 2019
6
3116
In species with sexual reproduction, no two individuals are alike, and scientists have long struggled to understand why there is so much genetic variation. In a new study published in Nature Ecology & Evolution, a team of ...
Evolution
Nov 18, 2019
0
15
A molecule called tRNA, or transfer ribonucleic acid, is an essential component of the human genome that acts as a translator. It reads the genetic code and translates it into proteins—one of the key building blocks of ...
Biotechnology
Aug 13, 2019
0
93
What makes one person different from one another, and how did these differences evolve?
Biotechnology
Mar 19, 2019
0
109
Species often experience a genetic bottleneck that diminishes genetic variation after speciation or introduction into a new area. Though bottlenecks in population size always reduce fitness and evolutionary potential, introduced ...
Plants & Animals
Mar 19, 2019
0
75
For nearly 100 years, biologists have argued about how exactly natural selection can possibly work. If nature selects the individuals with the best genes, then why aren't all organisms the same? What maintains the genetic ...
Evolution
Dec 13, 2018
0
73
A variety of animals have male-specific ornament traits and these ornaments are favored by female choice. Which male traits are preferred by females often varies among females. Genetic mechanisms that create and maintain ...
Plants & Animals
Nov 13, 2018
0
53
Many animals have evolved fur or feather colors to blend in with the environment and hide from predators. But how do animals stay camouflaged when their environment changes with each new season? Researchers at the University ...
Plants & Animals
Jun 21, 2018
1
164
It is still widely believed that the gene is the foundation of life – that its discovery has provided information about how all living beings are controlled by the genetic factors they inherit from their parents.
Biotechnology
Mar 28, 2018
0
10
A species of butterfly that changes its appearance through the seasons lacks the genetic variation needed to quickly evolve a different response to more unpredictable environmental conditions, such as those expected under ...
Ecology
Mar 8, 2018
0
10
