"10 . ) Show me one instance of a mutation that created a beneficial , selectable modification to an existing structure ."
"Ah , this is a much better place to employ the sickle cell example . Also there are squillions of examples in evolutionary bacteriology ."
"Show me one instance a mutation that created a beneficial , selectable modification to an existing structure ."
"Ah , this is a much better place to employ the sickle cell example there are squillions of examples in evolutionary bacteriology"