Immunity can be passed from parents to offspring in mammals; they give their young antigens and resistance through their milk. Insects, as far as I know, don't nurse and don't pass on anything to their young OTHER than their genetic makeup. I am a chemist and not a biologist though so I could be wrong. Things like pigment color of wings are genetic though.
Besides the whole natural selection theory is just that when resources (food, shelter, water) are limited and you apply some outside pressure then species which can cope with the change thrive and those who can't die out. That is a pretty hard theory to disprove as it can be seen over and over again in nature.
|