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This page contains all of the posts and discussion on MemeStreams referencing the following web page: Startling Scientists, Plant Fixes Its Flawed Gene. You can find discussions on MemeStreams as you surf the web, even if you aren't a MemeStreams member, using the Threads Bookmarklet.

Startling Scientists, Plant Fixes Its Flawed Gene
by noteworthy at 5:54 am EST, Mar 23, 2005

In a startling discovery, geneticists at Purdue University say they have found plants that possess a corrected version of a defective gene inherited from both their parents, as if some handy backup copy with the right version had been made in the grandparents' generation or earlier.

The finding implies that some organisms may contain a cryptic backup copy of their genome that bypasses the usual mechanisms of heredity. If confirmed, it would represent an unprecedented exception to the laws of inheritance discovered by Gregor Mendel in the 19th century. Equally surprising, the cryptic genome appears not to be made of DNA, the standard hereditary material.

The discovery also raises interesting biological questions -- including whether it gets in the way of evolution, which depends on mutations changing an organism rather than being put right by a backup system.


Startling Scientists, Plant Fixes Its Flawed Gene
by k at 11:25 am EST, Mar 23, 2005

In a startling discovery, geneticists at Purdue University say they have found plants that possess a corrected version of a defective gene inherited from both their parents, as if some handy backup copy with the right version had been made in the grandparents' generation or earlier.

The finding implies that some organisms may contain a cryptic backup copy of their genome that bypasses the usual mechanisms of heredity. If confirmed, it would represent an unprecedented exception to the laws of inheritance discovered by Gregor Mendel in the 19th century. Equally surprising, the cryptic genome appears not to be made of DNA, the standard hereditary material.

The discovery also raises interesting biological questions -- including whether it gets in the way of evolution, which depends on mutations changing an organism rather than being put right by a backup system.

[ Fascinating. -k]


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