Identical twins are more similar to one another than a clone
will be to the person cloned.President Obama lifted the ban on federal funding of embryonic stem cell research last Monday. Many researchers breathed a sigh of relief as they could finally get to work using these cells to find treatments and even cures for many debilitating diseases and injuries.
Of course, these cells aren't any less controversial than they were eight years ago. Researchers will still need to destroy embryos to get these cells (at least until they perfect iPS cells which would make this part of the debate moot). Anyone who considers an embryo made up of a few hundred cells to be alive will protest that embryo's destruction.
This is a legitimate argument based on when someone believes life begins. But some protests I heard were from people worried about embryonic stem cells being used to clone humans. What I can't figure out is why anyone would want to clone someone.
Cloning won't be like it is in the movies. Scientists won't take a cell from someone and make an exact copy of a person who is the same age and has the same memory.
Instead, a human will be cloned like any other mammal. First they'll remove the DNA-containing nucleus from an egg. Then they'll fuse that egg with a cell from the person they want to clone.