Answered

A person with trisomy 21 has an extra copy of chromosome 21. What happened during meiosis that caused the person to get three copies of chromosome 21 instead of two copies? a) nondisjunction b) genetic recombination c) crossing-over d) binary fission



Answer :

nondisjunction

im taking the final in bio 2b.
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Demon16 you think you can tell me the answers to the final exam on biology?