News tagged with paternal chromosomes
Chromosome breakpoints contribute to genetic variation
Apr 23, 2009 |
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A new study reveals that - contrary to decades of evolutionary thought - chromosome regions that are prone to breakage when new species are formed are a rich source of genetic variation.
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The importance of grandmothers in the lives of their grandchildren
Oct 29, 2009 |
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(PhysOrg.com) -- It is widely believed that women live long post-reproductive lives to help care for their grandchildren. According to the "Grandmother Hypothesis," post-menopausal women can increase their ...
New finding about the bane of parents' lives -- head lice
Biology /
Jan 27, 2009 |
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(PhysOrg.com) -- Head lice are a challenge for parents of primary-school aged children all around the world, including Australia.
Physicist cracks women's random but always lucky choice of X chromosome
Jun 12, 2007 |
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A University of Warwick physicist has uncovered how female cells are able to choose randomly between their two X chromosomes and why that choice is always lucky.
New research shows key player in mitosis not required for chromosome alignment
Jul 06, 2009 |
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(PhysOrg.com) -- K-fibers, structures long thought to play a key role in the alignment of chromosomes prior to cell division, are not required after all, say Indiana University and New York State Department ...
Maternal, paternal genes' tug-of-war may last well into childhood
Jul 28, 2009 |
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(PhysOrg.com) -- An analysis of rare genetic disorders in which children lack some genes from one parent suggests that maternal and paternal genes engage in a subtle tug-of-war well into childhood, and possibly ...
Researchers identify first sex chromosome gene involved in meiosis and male infertility
Mar 14, 2008 |
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A team of scientists led by University of Pennsylvania veterinary researchers have identified a gene, TEX11, located on the X chromosome, which when disrupted in mice renders the males sterile and reduces female fecundity. ...
Genes in the sex cells of plants are marked to switch on or off before fertilisation
Jul 18, 2006 |
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Plant genes share the same mechanism found in mammals in the way they are marked or ‘imprinted’ to switch on or off depending on their sex, just before fertilisation. Oxford scientists have now shown that differences ...
New gene discovered for new form of intellectual disability
Apr 24, 2008 |
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The Centre for Addiction and Mental Health (CAMH) has discovered a new form of intellectual disability involving mental retardation (MR) along with the eye defect retinitis pigmentosa (RP). CAMH also discovered the previously ...
Male sex chromosome losing genes by rapid evolution, study reveals
Jul 17, 2009 |
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Scientists have long suspected that the sex chromosome that only males carry is deteriorating and could disappear entirely within a few million years, but until now, no one has understood the evolutionary ...
Newly-discovered mechanism can explain the Beckwith-Wiedemann syndrome
Oct 24, 2008 |
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Researchers from Uppsala University have discovered a mechanism that silences several genes in a chromosome domain. The findings, published in today's on-line issue of Molecular Cell, have implications in understanding the hu ...
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