Not every evolutionary change is beneficial or even makes any difference: for example, things that don't kill you (for example motion sickness, colour blindness, short/long sightedness, deafness and heaps more) and therefore take you out of the gene pool before you reproduce will still be passed on genetically.
I know someone who's slowly dying from a rare genetic condition her mother didn't know she had until long after she'd had her children and which isn't always passed on and doesn't show up until quite late in age.
That's why it's so stupid that some people actually believe that a non birth injury can be passed on: for example, someone who loses a leg in an accident won't pass on one-leggedness to her/his children.
Maybe you should research what evolution actually means: it's actually fascinating, as is most science once you look into it.
evolution question.
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Not every evolutionary change is beneficial or even makes any difference: for example, things that don't kill you (for example motion sickness, colour blindness, short/long sightedness, deafness and heaps more) and therefore take you out of the gene pool before you reproduce will still be passed on genetically.
I know someone who's slowly dying from a rare genetic condition her mother didn't know she had until long after she'd had her children and which isn't always passed on and doesn't show up until quite late in age.
That's why it's so stupid that some people actually believe that a non birth injury can be passed on: for example, someone who loses a leg in an accident won't pass on one-leggedness to her/his children.
Maybe you should research what evolution actually means: it's actually fascinating, as is most science once you look into it.