How scientists redesign DNA codes

NEW YORK (AP) — Scientists are working to create yeast that operates with custom-made DNA.
They have long been able to make specific changes in an organism’s DNA. Now, they’re pushing into the more radical step of starting over, and building redesigned versions from scratch.
Their work is part of a bold and controversial pursuit aimed at creating custom-made DNA codes to be inserted into living cells to change how they function, or even provide treatments for diseases. It could