Bishop73

Question: How did they clone David's mother by using a hair sample? Hair doesn't contain DNA. Secondly, if they wanted to make David happy by bringing his mother back, why not recreate her in a simulation instead of creating a clone of her? Then David would be able to spend as much time with her as he wants.

Answer: This is a 2 part question and the second part may be speculation since the film doesn't really discuss why she couldn't be a simulation nor do I have a viable theory. Regarding DNA though. Cut hair can contain DNA. Without getting too much into it, it's not that hair inherently does not contain DNA, the formation of hair destroys cells, and thus nuclear DNA is destroyed. But nucleated corneocytes are intact cells that for some reason aren't damaged and they do contain DNA. The less available DNA there is in a sample, the more advanced and expensive techniques are required to extract it. With 2,000 years of technological advancements, it would be easy to extract the needed DNA.

Bishop73

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