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Nature 416, 491-493 (4 April 2002) | doi:10.1038/416491a
Open Innovation Challenges
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Protect Enzyme from In Planta Degradation
A proposal for stable expression of an enzyme in corn seed is desired.
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Efficient Chromosome Doubling: Plant Cell Division
The Seeker is looking for an efficient chromosome doubling method in plants and in particular, metho...
- More Challenges
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Canada Excellence Research Chair in Biofuels and Biorefining Innovation
- University of British Columbia
- Vancouver, British Columbia Canada
Research Fellows in Pluripotent Stem Cell Technology
- The University of Nottingham
- Nottingham, UK
Genetics: Immaculate misconception
M. A. Surani
Abstract
In mammals, mother and father make an equal genetic, but an unequal 'epigenetic', contribution to offspring. Studies of humans and mice with no maternal epigenetic contribution reveal more about this asymmetry.
William Harvey, an anatomist and personal physician to two kings of England, was taking a gamble when he proposed in 1651 that 'Ex ovo omnia' — 'everything comes from an egg'. It wasn't until much later that the mammalian egg, or oocyte, was first detected and Harvey was proved right: a whole organism can develop from this remarkable cell.
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