Asked by helppp
                Down syndrome is
A. a sex-linked trait.
B. a recessive trait.
C. the result of having too few chromosomes.
D. the result of having an extra chromosome.
            
        A. a sex-linked trait.
B. a recessive trait.
C. the result of having too few chromosomes.
D. the result of having an extra chromosome.
Answers
                    Answered by
            emma
            
    D. the result of having an extra chromosome.
    
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