Chromosome abnormality
hideA chromosome anomaly (chromosome abnormality) reflects an atypical number of chromosomes (karyotype) or a structural abnormality in one or more chromosomes. Chromosome anomalies usually occur when there is an error in cell division following meiosis or mitosis. There are many types of chromosome anomalies. They can be organized into two basic groups, numerical and structural anomalies.
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News tagged with chromosomal abnormalities
Ultrasound enhances noninvasive Down syndrome tests
Nov 20, 2009 |
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The addition of a "genetic sonogram" maximizes the accuracy of non-invasive testing for Down syndrome, said a Baylor College of Medicine researcher who was lead author of a landmark study in the current issue of Obstetrics an ...
Janet Rowley to receive Presidential Medal of Freedom for cancer chromosome studies
Jul 30, 2009 |
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Janet Davison Rowley, MD, a pioneer in demonstrating that cancer is a genetic disease, will receive the 2009 Presidential Medal of Freedom the White House announced Thursday. President Barack Obama will award ...
A yeast cancer model for mapping cancer genes
Jul 28, 2009 |
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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 Bi ...
Larger hospital units have lower miscarriage rates after invasive pregnancy tests
Jul 07, 2009 |
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A study of more than 64,000 pregnant women has found that miscarriage rates following amniocentesis and chorionic villus sampling (CVS) - two invasive procedures to detect chromosomal abnormalities and birth defects - were ...
Protein linked to mental retardation controls synapse maturation, plasticity
Medicine & Health / Neuroscience
Jun 01, 2009 |
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A team of neuroscientists at Cold Spring Harbor Laboratory (CSHL) has demonstrated the mechanism by which a signaling protein found throughout the brain controls the maturation and strength of excitatory synapses, the tiny ...
Baby at the buzzer: Older couples race against their biological clocks to start families
Apr 10, 2009 |
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Kim Harper started a career before starting a family. After graduating from Michigan State University in 1990, she traveled, earned a law degree and began working as an attorney. When Harper married in 2006, she and her husband, ...
The egg makes sure that sperm don't get too old
Mar 25, 2009 |
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In contrast to women, men are fertile throughout life, but research at the Sahlgrenska Academy, University of Gothenburg, Sweden, has now shown that a fertilising sperm can get help from the egg to rejuvenate. The result ...
Microarray analysis improves prenatal diagnosis
Nov 17, 2008 |
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A "chip" or array that can quickly detect disorders such as Down syndrome or other diseases associated with chromosomal abnormalities proved an effective tool in prenatal diagnosis in a series of 300 cases at Baylor College ...
