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  • Slicing chromosomes leads to new insights into cell division: Hunt's group hypothesized that polar ejection forces should be proportional to the chromosome 9;s size, and therefore could be predictably changed by altering the size of the chromosomes. Using newts as a model organism, they cut off pieces of the chromosomes� 39; arms. "We asked what the relationship is between the size of the fragment we removed and the direction the chromosome moved," Hunt said. "Not only did we observe a relationship, we established that polar ejection forces were in fact a direct cue that guided chromosomal movements in mitosis." When cells don't properly divide, they usually die. But survival can cause cancer or aging-related disorders. Likewise, genetic diseases such as Down's syndrome result from improper chromosome segregation.
  • Genetics Animations: multiple animations dealing with cell cycle, growth and genetics. Max

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    Video Buzz > Chromosomes

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    Related Chromosomes News

    Portuguese scientists working on chromosome segregation - PhysOrg

    A cell seen through a microscope: the chromosomes (in blue) are attached to the microtubule tracks (in red) in the region of the centromere -- green spots mark the protein CENP-A on the centromere. Credit: Lars Jansen (IGC) Lars Jansen's work on the ...

    Female human embryos adjust the balance of X chromosomes before ... - EurekAlert

    Amsterdam, The Netherlands: Dutch researchers have found the first evidence that a process of inactivating the X chromosome during embryo development and implantation, which was known to occur in mice but unknown in humans, does, in fact, take place ...

    Why chromosome? - Times of India

    Is the Y chromosome the genetic determinant of the male gender doomed to become the 'why?' chromosome and be phased out of existence? According to an Australian geneticist who specialises in human sex chromosomes, Professor Jennifer Graves, there is ...

    Genes and Chromosomes - Chicago Tribune

    WASHINGTON (AP) ? On civil rights and campaign cash, the Supreme Court earned an "incomplete" grade in the term that just ended. There is a good chance the court will have a new member but the same right-of-center tilt when the justices return in

    Genetic link to brain cancer found - Channel 4 News

    A genetic link to deadly brain cancer has been uncovered by scientists. US researchers found single-letter variations in the genetic code that increased the relative risk of glioblastoma by 50%. People with the changes, known as a single nucleotide ...

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