News tagged with chromosomes

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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 ...

dateJul 01, 2015 in Cell & Microbiology
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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 ...

dateJun 04, 2015 in Biotechnology
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Sex chromosomes—why the Y genes matter

Several genes have been lost from the Y chromosome in humans and other mammals, according to research published in the open access journal Genome Biology. The study shows that essential Y genes are rescue ...

dateMay 27, 2015 in Biotechnology
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How an RNA gene silences a whole chromosome

Researchers at Caltech have discovered how an abundant class of RNA genes, called long non-coding RNAs (lncRNAs, pronounced link RNAs) can regulate key genes. By studying an important lncRNA, called Xist, ...

dateApr 27, 2015 in Biotechnology
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Single cells seen in unprecedented detail

Researchers have developed a large-scale sequencing technique called Genome and Transcriptome Sequencing (G&T-seq) that reveals, simultaneously, the unique genome sequence of a single cell and the activity ...

dateApr 27, 2015 in Biotechnology
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Scientists unveil sex-linked control of genes

Many proteins interact with an RNA molecule called Xist to coat and silence one X chromosome in every female cell. Learning how genes are targeted and silenced may help researchers studying sex-specific diseases.

dateApr 03, 2015 in Biotechnology
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