There are various studies looking at changes to the virus genome — and the possible impact on how the virus affects humans. Here's what we know (and don't yet know) about mutations.
It turns out you aren't simply a clone of cells from the womb. Over a lifetime, mutations create a patchwork of tissues made with pieces that have subtly different genetic signatures.
New data have confirmed major differences in mutation rates between the sexes — showing that children inherit more mutations from their dads than from their moms, says guest commentator Robert Martin.
Scientists have found a group of worms that haven't reproduced sexually for 18 million years. Normally that would be a recipe for quick extinction, but these little guys seem none the worse for wear.
Three genetic changes could be enough to make a bird flu strain that's already killing some people in China highly contagious. Are experiments with a deliberately mutated version too risky?
Researchers have long known behavior, environment and genetics play a role in cancer. A study in Science finds luck is also a major factor. Nearly two-thirds of cancer mutations arise randomly.
