An abnormal human male phenotype involving an extra $X$ chromosome $(XXY)$ is a case of

  • A
    Down's syndrome
  • B
    Intersex
  • C
    Edward syndrome
  • D
    Klinefelter syndrome

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Similar Questions

Identify the disease on the basis of the following characters:
$(1)$ Short stature with a small round head.
$(2)$ Furrowed tongue and partially open mouth.
$(3)$ Palm is broad with a characteristic palm crease.

The monosomic condition in human beings depicted as $XO$ is referred to as

Which pair of chromosomes is concerned with Down's syndrome?

In man,the normal number of chromosomes is

Loss of a $X$ chromosome in a particular cell during its development results in:

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