Docstoc

Mutation

Document Sample
Mutation Powered By Docstoc
					Mutation



A permanent alteration in the structure of DNA, the genetic material of a cell. The alterations in DNA can
be passed on from one generation to the next unless repaired. Cells possess elaborate mechanisms to
repair damaged DNA by environmental influences (mutagens) as well as within cells by wear and tear.
One theory of AGING proposes that, over time, an individual’s DNA repair system becomes less capable
of performing its task and DNA damage accumulates, leading ultimately to CANCER. Appropriate
nutrition can support DNA synthesis and repair, as well as minimizing the impact of agents that can
cause mutations. Key to countering the latter agents are ANTIOXIDANTS, compounds that either destroy
highly reactive chemicals called FREE RADICALS or prevent further oxidative damage. Antioxidant
nutrients include VITAMIN C, VITAMIN E, and BETA-CAROTENE (pro-vitamin A), as well as SELENIUM and
other TRACE MINERALS.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:12
posted:6/7/2012
language:English
pages:1
Zaidi Shamsuddin Zaidi Shamsuddin Assistant Manager http://tm.com.my
About Easy going, Like to explore a new things.