Even worms have a ticking fertility clock. Older worms are less efficient at repairing broken DNA strands while making egg cells—part of a process that's essential for fertility. A new study from University of Oregon (UO) ...
Cell & Microbiology
Dec 5, 2022
0
88
In mammals, the distinction between male and female at the chromosomal level is due to the X and Y chromosomes. Typically, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY). The Sry gene on ...
Plants & Animals
Nov 28, 2022
0
81
Unlike humans, turtles, lizards and other reptiles—such as crocodiles—do not have sex chromosomes. Their sex is determined based on the environment, which makes them especially vulnerable to climate change. An increase ...
Plants & Animals
Nov 15, 2022
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85
A team of researchers from Cornell University has sequenced the Honeycrisp apple genome, a boon for scientists and breeders working with this popular and economically important cultivar.
Plants & Animals
Oct 26, 2022
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103
The evolution of a new species by hybridization from two already described species without a change in chromosome number is very rare in the animal kingdom. So far, only a few accepted empirical examples exist for this spontaneous ...
Evolution
Oct 11, 2022
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213
With the aid of physics and a minuscule magnet, researchers have discovered a new structure of telomeric DNA. Telomeres are sometimes seen as the key to living longer. They protect genes from damage but get a bit shorter ...
Cell & Microbiology
Sep 15, 2022
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4014
A research team led by André Marques at the Max Planck Institute for Plant Breeding Research in Cologne, Germany, has uncovered the profound effects of an atypical mode of chromosome arrangement on genome organization and ...
Evolution
Aug 4, 2022
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84
Researchers from the Gerlich Group at IMBA—Institute of Molecular Biotechnology of the Austrian Academy of Sciences—discovered a molecular mechanism that confers special physical properties to chromosomes in dividing ...
Molecular & Computational biology
Aug 3, 2022
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73
For the first time, scientists from CNRS, Institut Curie and Sorbonne Université have been able to act physically on chromosomes in living cells. By subjecting the chromosomes to different forces using magnets, they discovered ...
Cell & Microbiology
Aug 2, 2022
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196
In humans, a fertilized egg is no guarantee of reproductive success. Most embryos stop developing and perish within days of fertilization, usually because they have an abnormal number of chromosomes. Now, researchers at Columbia ...
Cell & Microbiology
Jul 19, 2022
0
47
