News tagged with sex chromosomes
Related topics: genes
Sex-determination system
A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most sexual organisms have two sexes. In many cases, sex determination is genetic: males and females have different alleles or even different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex is determined by environmental variables (such as temperature) or social variables (the size of an organism relative to other members of its population). The details of some sex-determination systems are not yet fully understood.
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Sampling of embryonic DNA after IVF without biopsy
New study published in Reproductive Biomedicine Online shows that fluid-filled cavity in 5-day old human blastocysts may contain DNA from the embryo, allowing diagnosis of genetic disease without a biopsy
Medical research
Apr 02, 2013 |
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Selfish gene may undermine genome police
(Medical Xpress)—For a bunch of inanimate chemical compounds, the nucleic and amino acids caught up in the infamous "selfish" segregation distorter (SD) saga have put on quite a soap opera for biologists ...
Genetics
Mar 05, 2013 |
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Fragile X makes brain cells talk too much, research shows
The most common inherited form of mental retardation and autism, fragile X syndrome, turns some brain cells into chatterboxes, scientists at Washington University School of Medicine in St. Louis report.
Neuroscience
Feb 20, 2013 |
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U-M to develop guide for parents of children with disorders of sex development
When a child is born with a disorder of sex development, decisions regarding gender assignment and genital surgery are often made quickly and under pressure.
Health
Jan 16, 2013 |
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An embryo that is neither male nor female
So, is it a girl or a boy? This is the first question parents ask at the birth of an infant. Though the answer is obvious, the mechanism of sex determination is much less so. Researchers at the University of Geneva (UNIGE) ...
Genetics
Jan 03, 2013 |
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DNA findings hold potential for cancert treatment
(Medical Xpress)—Six years ago, Boise State University biology professor Greg Hampikian and computer science colleague Tim Andersen announced that they had identified tiny DNA and protein sequences that were absent in nature. ...
Cancer
Oct 09, 2012 |
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Gene link to higher rates of bowel cancer in men
(Medical Xpress) -- Scientists have shown for the first time that one of the sex chromosomes is involved in the development of a cancer that can afflict both genders, according to a Cancer Research UK-funded ...
Cancer
Jun 01, 2012 |
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Testosterone concentrations in men affected by genetic makeup
Genetics play an important role in the variation in, and risk of, low testosterone concentrations in men. A study by the CHARGE Sex Hormone Consortium, published in the open-access journal PLoS Genetics on Thursday, 6th Oc ...
Genetics
Oct 06, 2011 |
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New genetic region responsible for testicle development found
New research presented today at the European Society for Paediatric Endocrinology meeting has found a genetic region, which may control testicle development in the foetus.
Genetics
Sep 26, 2011 |
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Researchers discover gene required to maintain male sex throughout life
University of Minnesota Medical School and College of Biological Sciences researchers have made a key discovery showing that male sex must be maintained throughout life.
Genetics
Jul 20, 2011 |
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