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) -- It seems we may have parasites to thank for the existence of sex as we know it. Indiana University biologists have found that, although sexual reproduction between two individuals is costly from an evolutionary ...
Plants & Animals
Jul 7, 2011
3
0
(PhysOrg.com) -- A new analysis of extinct sea creatures suggests that the transition from egg-laying to live-born young opened up evolutionary pathways that allowed these ancient species to adapt to and thrive in open oceans.
Evolution
Sep 16, 2009
0
0
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
Biological sex can be an important factor in predicting how animal and plant populations respond to temperature changes, from sea turtles whose sex is determined by the heat on the beach where they hatch, to female Arctic ...
Plants & Animals
Oct 27, 2023
2
40
As butterflies flit among flowers, they don't all view blossoms the same way. In a phenomenon called sexually dimorphic vision, females of some butterfly species perceive ultraviolet color while the males see light and dark. ...
Plants & Animals
Aug 10, 2023
0
502
The sex and sexual characteristics constitute key aspects of an organism's life and are determined by a biological process known as sex determination. These ever-evolving mechanisms are broadly classified based on the type ...
Cell & Microbiology
Jun 21, 2022
0
22
Studying two highly divergent phyla of worms that contain numerous parasites that cause human and livestock diseases, the research group of Qi Zhou from the University of Vienna and Zhejiang University, sheds light on how ...
Evolution
Jun 15, 2022
0
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