News tagged with aneuploidy
Aneuploidy
Aneuploidy is an abnormal number of chromosomes, and is a type of chromosome abnormality. An extra or missing chromosome is a common cause of genetic disorders (birth defects). Some cancer cells also have abnormal numbers of chromosomes. Aneuploidy occurs during cell division when the chromosomes do not separate properly between the two cells. Chromosome abnormalities occur in 1 of 160 live births. The most common extra chromosomes among live births are 21, 18 and 13.
Different species have different numbers of normal chromosomes and thus the term "aneuploidy" refers to the chromosome number being different for that species.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Researchers describe new functions of cohesin relevant for human disease
Cohesin is a ring-shaped protein complex involved in the spatial organization of the genome and in mitotic chromosome structure. Vertebrate somatic cells have two versions of cohesin that contain either SA1 or SA2, but their ...
Cancer
May 03, 2012 |
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'Pulverized' chromosomes linked to cancer?
They are the Robinson Crusoes of the intracellular world -- lone chromosomes, whole and hardy, stranded outside the nucleus where their fellow chromosomes reside. Such castaways, each confined to its own "micronucleus," ...
Cancer
Jan 19, 2012 |
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Researchers confirm key feature of age-related miscarriages and birth defects
Washington State University researchers have confirmed a critical step in cell division that results in age-related miscarriages and birth defects, including Down syndrome.
Medical research
Apr 14, 2011 |
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