Introduction to Genetics

Think about it likea set of instructions for creating the organism.Both the chimp and human DNA instruct the creation process to be making (not necessarily in order) bilateral symmetry, then an anus*, and then form a mouth, a spinal cord, head, two arms, two legs, fingers and toes, etc.Those instructions for forming those things are the same DNA in both chimps and humans.*as Deuterostomes, which means the anus forms before the mouth, all of us at one point in our lives, were just assholes Edited by Catholic Scientist, : hid blueprint

Yeah, you're right. I always think of a "blueprint" as a set of instruction. I was using that 'or' as an i.e. But blueprints are not instructions, they're pictures, and DNA is no picture.

Then stay out of the Science forums. No, you!

It didn't occur just in time. It happens all the time. Its just that when a black mouse pops up in a light colored environment, it can't hide and gets eaten right away (so the gene doesn't spread).But when there is a dark environment, those black mice that pop up every now and then can now hide better than the other mice, so the other mice get eaten instead of them and the gene gets passed on.

Not necessarily. It could be similiar mutations occuring at different times, or it could be a different mutation causing a similiar change in fur color.There's more than one way to get a black mouse. No it gets completely eliminated and then later another different black mouse pops up again. And then it gets eliminated. Then another different one pops up, but wait... this time he ends up in a dark colored environment. So he thrives and passes the gene on. It could be a different mutation than the earlier ones that didn't make it.