News tagged with chromosomes

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X chromosome inactivation

Each cell in a woman's body contains two X chromosomes. One of these chromosomes is switched off, because nobody can live with two active X chromosomes. Hendrik Marks and Henk Stunnenberg, molecular biologists at Radboud ...

dateAug 19, 2015 in Biotechnology
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How a female X chromosome is inactivated

In female mammals, one of the two X chromosomes is inactivated. Thanks to research using special stem cells, geneticists at ETH Zurich have been able to provide detailed insight into the molecular mechanism behind this inactivation ...

dateAug 10, 2015 in Biotechnology
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DNA which only females have

In many animal species, the chromosomes differ between the sexes. The male has a Y chromosome. In some animals, however, for example birds, it is the other way round. In birds, the females have their own sex chromosome, the ...

dateJun 04, 2015 in Biotechnology
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Why human egg cells don't age well

When egg cells form with an incorrect number of chromosomes—a problem that increases with age—the result is usually a miscarriage or a genetic disease such as Down syndrome. Now, researchers at the RIKEN Center for Developmental ...

dateJul 01, 2015 in Cell & Microbiology
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New cell division mechanism discovered

Canadian and British researchers have discovered that chromosomes play an active role in animal cell division. This occurs at a precise stage - cytokinesis - when the cell splits into two new daughter cells. It was observed ...

dateJul 13, 2015 in Cell & Microbiology
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