This is a very interesting little story concerning blind . They are born with eyes (non-functional), but since their environment is water in a completely dark cave, those eyes are unnecessary and eventually atrophy and become scaled over. Scientists have speculated that different are responsible for causing in different populations. This has been confirmed by the breeding of separate populations, which, in some instances, results in offspring that can see within the first generation. That is quite interesting , and shows that indeed, different are acting in different populations.

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