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Latest Chromosome Stories

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2009-12-10 14:01:35

EMBL scientists uncover the gene responsible for keeping females female Is it a boy or a girl? Expecting parents may be accustomed to this question, but contrary to what they may think, the answer doesn't depend solely on their child's sex chromosomes. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany and the Medical Research Council's National Institute for Medical Research (NIMR) at Mill Hill, UK discovered that if a specific gene located on a non-sex...

2009-12-10 12:53:49

Researchers have discovered a new explanation for differences in the severity of mental illness in males. The more excess copies of a certain gene, the more serious the handicap. The genetic defect is situated on the X-chromosome; and it is suspected that it is the amount of copies of the GDI1 gene that is responsible. The results are being published in the American Journal of Human Genetics, and are the result of work by the group of Guy Froyen connected to VIB, a life sciences research...

2009-12-07 18:49:44

Animal study demonstrates how whole chromosome changes cause cancer Mayo Clinic researchers have proven the longstanding theory that changes in the number of whole chromosomes -- called aneuploidy -- can cause cancer by eliminating tumor suppressor genes. Their findings, which appear in the current issue of the journal Cancer Cell along with an independent commentary on the discovery, end a major controversy in the field of cancer research as to whether aneuploidy is a cause or a consequence...

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2009-11-14 07:49:18

Meiosis "“ the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell "“ is a major crossroads in all organisms reproducing sexually. Yet, how the cell precisely choreographs these chromosomal interactions is a long-standing question. New findings by University of California, Berkeley, scientists show that the cell's cytoskeleton, which moves things around in the cell, plays a critical role, essentially reaching into the nucleus to...

2009-11-11 07:00:00

INDIANAPOLIS and CHICAGO, Nov. 11 /PRNewswire/ -- Dow AgroSciences LLC, a wholly owned subsidiary of The Dow Chemical Company (NYSE: DOW), and Chromatin Inc. announced today that the companies have entered into two agreements: the first provides Dow with rights to Chromatin's Mini-Chromosome technology and the second establishes an exclusive research and license agreement to combine EXZACT(TM) Precision Technology with Mini-Chromosomes, creating a novel technology platform for the...

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2009-11-02 12:30:00

Guide to pumpkin, melon and plant vascular system The genome of the cucumber has been sequenced by an international consortium lead by Chinese and U.S. institutions. The annotated genome is published online Nov. 1 by the journal Nature Genetics. The cucumber genome will give insight into the genetics of the whole cucurbit family, which includes pumpkins and squash, melon and watermelon, and be a platform for research in plant biology, said William Lucas, professor and chair of the Department...

2009-10-27 12:47:34

Cornell researchers have discovered a genetic mechanism in fruit flies that prevents two closely related species from reproducing, a finding that offers clues to how species evolve. When two populations of a species become geographically isolated from each other, their genes diverge from one another over time. Eventually, when a male from one group mates with a female from the other group, the offspring will die or be born sterile, as crosses between horses and donkeys produce sterile mules....

2009-10-26 23:48:38

Biological species are often defined on the basis of reproductive isolation. Ever since Darwin pointed out his difficulty in explaining why crosses between two species often yield sterile or inviable progeny (for instance, mules emerging from a cross between a horse and a donkey), biologists have struggled with this question. New research into this field by basic scientists at Fred Hutchinson Cancer Research Center, published online Oct. 22 in Science Express, suggests that the solution to...

2009-10-18 12:26:47

Study led by St. Jude Children's Research Hospital investigators expands understanding of acute lymphoblastic leukemia in children with Down syndrome, fueling hope for new treatment Researchers identified a new chromosomal abnormality in acute lymphoblastic leukemia (ALL) that appears to work in concert with another mutation to give rise to cancer. This latest anomaly is particularly common in children with Down syndrome. The findings have already resulted in new diagnostic tests and...

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2009-10-03 09:44:55

Diversity of fish in East African lakes points to mechanism for evolution of sex chromosomes Biologists have genetically mapped the sex chromosomes of several species of cichlid fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. In research published in this week's issue of the journal Science, biologists Thomas Kocher, Reade Roberts and Jennifer Ser of the University of Maryland describe the genetic basis for two co-existing systems of...


Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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