Fathers Pass Along More Mutations As They Age

The testes are towards the outside of the body and vulnerable to all sorts of things, while the ovaries are better protected. Furthermore, sperm is produced over the course of a lifetime, whereas eggs aren't. The end result is that eggs are likely to have the original genetic material of Mom, while the sperm is more likely to have been modified (by radiation, damage from trauma, copying errors, etc) from the original genetic material of Dad.

This seems like a good evolutionary strategy, however it arose: Mom provides a version that has allowed her to survive and reproduce, suggesting a minimum viability, which she passes on to the child. Dad provides a version of an evolutionarily successful human that is modified, allowing the species to improve itself (And if he's lived to old age, he was probably an effective survivor evolutionarily speaking).

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/quSn5Y2YyFs/fathers-pass-along-more-mutations-as-they-age

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