Down syndrome:
A)is a form of mental retardation.
B)affects males more than females.
C)occurs when an individual gets an extra copy of chromosome 23.
D)results in a life expectancy of about 18 years.

Question

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The Answer of Down syndrome:
A)is a form of mental retardation.
B)affects males more than females.
C)occurs when an individual gets an extra copy of chromosome 23.
D)results in a life expectancy of about 18 years.

Down Syndrome