For some reason it wouldn't let me type out the question, I'll try to type it in the comments so you can see what it says. Every
time I tried to type it as the question it said that it contains forbidden language and I did everything and nothing was working never mind I just tried type it in the comments and it won't work, I hope you're able to read it
People with the sickle cell mutation in both copies of the HBB gene produce proteins that clump together and lead to changes in the shape and behavior of red blood cells.