Asked • 06/22/19

How can someone share 50% of their DNA with their parents yet all humans share 99.9%?

I have heard that humans share 99.9% of their DNA with other humans. I have also heard that a child shares 50% of their DNA with their parents. How do I resolve this apparent contradiction? It has been really bothering me.

1 Expert Answer


Jesse E. answered • 07/05/19

Chemist specializing in tutoring in biology, math, and chemistry.

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