(Phys.org)—Males and females... Mars and Venus... XY and XX chromosomes—all are common memes. At the same time, the evolution of therian (placental and marsupial) sex chromosomes is less widely understood. More to the ...
Male and female mouse brains differ in important ways, according to a new study led by Stanford Medicine investigators.
Plants & Animals
Jan 21, 2022
10
298
Bearded dragon embryos can use two different sets of genes to become a female lizard—one activated by the sex chromosomes and the other activated by high temperatures during development. Sarah Whiteley and Arthur Georges ...
Plants & Animals
Apr 15, 2021
0
154
We may take it for granted that the sex of an animal is established at birth and doesn't change.
Plants & Animals
Jul 10, 2019
1
181
A comparison of Y chromosomes in eight African and eight European men dispels the common notion that the Y's genes are mostly unimportant and that the chromosome is destined to dwindle and disappear.
Biotechnology
Jan 9, 2014
0
0
A University of Utah study produced new mathematical support for a theory that explains why men in some cultures often feed and care for their sisters' children: where extramarital sex is common and accepted, a man's genes ...
Other
Nov 27, 2012
13
0
(Phys.org) -- Fruit flies are commonly used in genetics research because their lifespan is short, they are easy to breed in the laboratory, and mutants are widely available. There are about 1,500 known species. Now a new ...
(PhysOrg.com) -- Move over, Y chromosome - it's time X got some attention. In the first evolutionary study of the chromosome associated with being female, University of California, Berkeley, biologist Doris Bachtrog and her ...
Cell & Microbiology
Apr 16, 2009
1
0
Human sex chromosomes originated from a pair of autosomes, the ordinary or non-sex chromosomes that contain the majority of our genome and come in identical pairs. That ancestral pair of autosomes diverged to become two different ...
Molecular & Computational biology
Dec 15, 2023
2
1197
When animals of two different species mate, their hybrid offspring can be unhealthy or sterile. Often, only one sex is affected.
Evolution
Nov 20, 2023
0
28
