Researchers at University of California San Diego School of Medicine previously found a set of human gene mutations that protect older adults against cognitive decline and dementia. In a new study, published July 9, 2022 ...
Evolution
Jul 18, 2022
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503
When it comes to communicating with each other, some cells may be more "old school" than was previously thought.
Cell & Microbiology
Jul 1, 2015
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1318
Evolution, it seems, sometimes jumps instead of crawls. A research team led by a University of Chicago scientist has discovered two key mutations that sparked a hormonal revolution 500 million years ago.
Evolution
Jun 24, 2013
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0
An international team of researchers, led by scientists at the University of California, San Diego School of Medicine, suggest that inactivation of two specific genes related to the immune system may have conferred selected ...
Evolution
Jun 4, 2012
9
0
Human cells have a finite lifespan: They can only divide a certain number of times before they die. However, that lifespan is reset when reproductive cells are formed, which is why the children of a 20-year-old man have the ...
Biotechnology
Jun 24, 2011
15
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Human embryonic stem cells derived from excess IVF embryos may help scientists unlock the mysteries of infertility for other couples struggling to conceive, according to new research from the Stanford University School of ...
Cell & Microbiology
Oct 28, 2009
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1
(PhysOrg.com) -- OK, it takes two for human reproduction, and now it seems that plants and animals that can rely on either a partner or go alone by self-fertilization give their offspring a better chance for longer lives ...
Evolution
Oct 21, 2009
1
0
Are you a man or a mouse? A new paper, published in this week's issue of PLoS Biology, explores exactly what distinguishes our genome from that of the lab mouse. In the first comprehensive comparison between the genes of ...
Cell & Microbiology
May 27, 2009
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0
Some invasive plants can form persistent banks of seeds that remain under the soil for years, and this makes their eradication practically impossible. Over time, this invisible population of large quantities of living, buried ...
Plants & Animals
Jan 12, 2024
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53
How do you study reproductive aging, the biological clock that affects fertility, in the lab? Researchers at Howard Hughes Medical Institute's Janelia Research Campus use a surprising animal: the roundworm C. elegans.
Cell & Microbiology
Sep 14, 2023
0
4
Human reproduction is any form of sexual reproduction resulting in the conception of a child, typically involving sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the male reproductive system and the female reproductive system results in fertilization of the woman's ovum by the man's sperm, which after a gestation period is followed by childbirth. The fertilization of the ovum may nowadays be achieved by artificial insemination methods, which do not involve sexual intercourse.
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