The evolution of sex chromosomes is of crucial importance in biology as it stabilizes the mechanism underlying sex determination and usually results in an equal sex ratio. An international team of scientists, led by researchers ...
Biotechnology
Sep 8, 2020
1
166
Men may have a surprising genetic advantage over women, according to new research carried out at the University of St Andrews.
Biotechnology
Aug 12, 2020
0
480
Much smaller than its counterpart, the X chromosome, the Y chromosome has shrunken drastically over 200 million years of evolution. Even those who study it have used the word "wimpy" to describe it, and yet it continues to ...
Evolution
Aug 6, 2020
0
224
For nearly a century, biologists have modeled the evolution of sex chromosomes—the genetic instructions that primarily determine whether an individual will develop into a male or female (or a certain mating type)—resulting ...
Evolution
Jun 2, 2020
0
5
A modification that creates more male offspring was able to eliminate populations of malaria mosquitoes in lab experiments.
Plants & Animals
May 12, 2020
3
436
Sex in plants can be befuddling. Most species are hermaphrodites, expressing both male and female gametes in one individual. But some, including shrub willow Salix purpurea, employ the evolutionary strategy we are far more ...
Biotechnology
Apr 20, 2020
0
84
Unlike humans, sea turtles and other reptiles like crocodiles do not have sex chromosomes. Their sex is defined during development by the incubation environment. In sea turtles, sex is determined by the nest's temperature: ...
Plants & Animals
Apr 7, 2020
0
50
According to popular theory, men live shorter lives than women because they take bigger risks, have more dangerous jobs, drink and smoke more, and are poor at seeking advice from doctors.
Evolution
Mar 4, 2020
18
1612
Sex is an ancient and widespread phenomenon, with over 99 percent of eukaryotes (cells with nuclei) partaking in some form of sexual reproduction, at least occasionally. Given the relative ubiquity and presumed importance ...
Evolution
Dec 23, 2019
0
21
Researchers in Sweden and the UK have discovered the largest known avian sex chromosome. The giant chromosome was created when four chromosomes fused together into one, and has been found in two species of lark.
Evolution
Dec 4, 2019
0
16
