(C) The incorrect statement is $C$. Individuals affected by Down's Syndrome do not have higher intelligence; rather,they typically exhibit mental reta

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Individuals affected by Down's Syndrome will have congenital heart defects and are more intelligent.

(C) The incorrect statement is $C$. Individuals affected by Down's Syndrome do not have higher intelligence; rather,they typically exhibit mental retardation,short stature,and physical abnormalities such as congenital heart defects. Therefore,the claim that they are 'more intelligent' is factually incorrect.

Class 12 Biology Principles of Inheritance and Variation Chromosomal disorders

Easy

Find the incorrect statement among the following:

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A
In sex-linked recessive traits,the gene is transmitted from an unaffected carrier female to some of the male progeny.
B
Accumulation of phenylpyruvic acid in the brain results in mental retardation.
C
Individuals affected by Down's Syndrome will have congenital heart defects and are more intelligent.
D
Turner's Syndrome is caused due to the absence of one $X$-chromosome.