[AndrewC]

Nope. Read the article. It does not claim redundancy.

I 'll swear I saw the word redundancy is in the article.

There might be a third explanation: similar regions on other chromosomes could make up for the deletions. "It could be that these elements are so critical that there is redundancy in the system," says Kelly Frazer of Perlegen Sciences in California.

[AndrewC]

scratch the extraneous "is"

[Doctor Stochastic]

Is it your assertion that "could be" means "claim"?

[frgoff]

there is redundancy in the system," says Kelly Frazer of Perlegen Sciences in California.

If this is true, then we have another problem on our hands, specifically, the time it takes for evolution to occur. If there are redundant systems in DNA, then mutations will be that much, much less likely to manifest. The mutation would also have to compromise the redundant system in some way, or the mutation would simply be negated by the redundant system and repaired the next generation.