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Latest Cytogenetics Stories

Image 1 - Chromosome Analyses Of Prickly Pear Cacti Reveal Southern Glacial Refugia
2012-02-15 04:21:46

Analysis of chromosome number variation among species of a North American group of prickly pear cacti (nopales) showed that the most widespread species encountered are of hybrid origin. Those widespread species likely originated from hybridization among closely related parental species from western and southeastern North America. This study was published in the open access journal Comparative Cytogenetics. The prickly pear cacti (of the genus Opuntia) are endemic to the Americas. The genus...

2012-02-10 00:07:51

While both tests look for the same thing, chromosomal microarray finds more, says New York-Presbyterian/Columbia researcher who led nationwide study A nationwide, federally funded study has found that testing a developing fetus' DNA through chromosomal microarray (CMA) provides more information about potential disorders than does the standard method of prenatal testing, which is to visually examine the chromosomes (karyotyping). The results of the 4,000-plus-participant clinical study are...

2012-01-30 08:05:57

Stress-induced genomic instability facilitates rapid cellular adaption in yeast Cells trying to keep pace with constantly changing environmental conditions need to strike a fine balance between maintaining their genomic integrity and allowing enough genetic flexibility to adapt to inhospitable conditions. In their latest study, researchers at the Stowers Institute for Medical Research were able to show that under stressful conditions yeast genomes become unstable, readily acquiring or...

2012-01-23 21:58:16

Chromosome aberrations happen in pairs when it comes to cancer, TAU research finds A healthy genome is characterized by 23 pairs of chromosomes, and even a small change in this structure – such as an extra copy of a single chromosome – can lead to severe physical impairment. So it's no surprise that when it comes to cancer, chromosomal structure is frequently a contributing factor, says Prof. Ron Shamir of the Blavatnik School of Computer Science at Tel Aviv University. Now...

2012-01-19 20:43:58

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," are often found in cancer cells, but scientists haven't known what role, if any, they play in the cancer process. In a paper published online on Jan. 18 by the journal Nature, Dana-Farber Cancer Institute researchers have mapped out a mechanism by which micronuclei could...


Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
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