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Short stretches of piRNA evaluate cells' genetic history
Date:6/29/2012

w its expression.

"It's interesting that the animal is a little bit lenient," says Mello. "Maybe we don't necessarily want to shut off everything that we haven't seen before. Maybe there is some adaptive value to this type of variation."

More questions than answers remain about RNAe: What are all its targets? How exactly is the memory of past gene expression stored? And does the system react to changes in the environment, allowing more or fewer silenced genes to express in times of stress?

"So far, these small RNA systems are turning out to be really remarkable," says Mello. "But there's lots more to nail down."


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Contact: Jennifer Michalowski
michalow@hhmi.org
301-215-8576
Howard Hughes Medical Institute
Source:Eurekalert

Page: 1 2 3

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