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Originally Posted by Long Haired Git
I read somewhere that, on average, people have 30 mutations each - that is 30 genetic settings that are not inherited from either parent.
I personally have a rather obvious mutation - too obvious to mention and ruin my online anonimity - but it hasn't been passed onto any of my three kids (well, not visibly).
Also read or saw somewhere a theory that, as time goes on, the male chromozone weakens, and fewer and fewer males are born, eventually resulting in the death of the species.
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I bet there are a thousand times that many mutations. Each cell can and does have its own mutations. Since most of the human genome is junk (or at least it has no currently known function) it really doesnt matter. To many mutations or a critical mutation and the cell in question may turn cancerous. Really, mutations are a good thing, without them evolution doesnt take place.
You guys should read Genome by Matt Ridley.