I believe your answer is Blood
People with blood type AB cannot donate to other groups. Negative blood types can donate to blood with and without the Rh factor. Thus it is O-
Answer:
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<span>one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome</span>
Answer: Search Results
Web results
Ácido desoxirribonucleico - Wikipedia, la enciclopedia libre
Explanation:
