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Originally Posted by Augi
But some have said that because of medical advancements that more weaker genes pass to the next generation. I disagree with this because by looking at only 20 generations of time the average human life span has increased--because medical science has given us the power to defend our bodies from diseases. Many of the medicines effects stay with us and these benefits pass to the next generation.
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Just because the lifespan has increased doesn't mean that the people with "weaker genes" aren't passing them on. Medicine still does nothing to affect a persons genetic makeup.
And medicinal benefits are passed on to the next generation? Where is that coming from? Care to offer an example? ...Antibodies are usually passed between mother and son because they share the same blood (and later through breastfeeding), but the ability to produce those antibodies is generally not, hence why a child could get the same illness that the mother had and also why vaccines are still required in children regardless of whether their parents are immunized.