Question

# In human beings $$45$$ chromosomes/ single X/XO abnormality causes

A
Down's syndrome
B
Klinefelter's syndrome
C
Turner's syndrome
D
Edward's syndrome

Solution

## The correct option is C Turner's syndromeTurner's syndrome affects only females as the result of a missing or partially missing X chromosome. Hence they have 45 chromosomes or it is also referred to as single X.So, the correct answer is 'Turner's syndrome'.Biology

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