Most living cells have a defined number of chromosomes: Human cells, for example, have 23 pairs. As cells divide, they can make errors that lead to a gain or loss of chromosomes, which is usually very harmful.
Cell & Microbiology
Jun 19, 2017
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New insights into how the cells in our bodies divide could improve our knowledge of a condition linked to cancer, a study suggests.
Cell & Microbiology
Feb 4, 2014
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Baker's yeast is a popular test organism in biology. Yeasts are able to duplicate single chromosomes reversibly and thereby adapt flexibly to environmental conditions. Scientists from the Luxembourg Centre for Systems Biomedicine ...
Cell & Microbiology
Aug 14, 2013
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When designing new cancer drugs, biologists often target specific gene mutations found only in cancer cells, or in a subset of cancer cells. A team of MIT biologists is now taking a slightly different approach, targeting ...
Cell & Microbiology
Mar 8, 2011
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(PhysOrg.com) -- Biologist Barbara Mellone uses tiny cameras to study what happens when a dividing cell makes a mistake.
Cell & Microbiology
Sep 20, 2010
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Researchers have devised a scheme for identifying genes in yeast that could lead to the identification of new cancer genes in humans. The study is published online this week in the open-access journal PLoS Biology.
Biotechnology
Jul 28, 2009
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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.
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