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A child whose sex chromosome pattern is

A. XY develops into a normal female. 

B. XO shows incomplete sexual maturation at puberty.

C. XXX develops exaggerated female secondary sexual characteristics.

D. XXY develops into a true hermaphrodite. 

E. XX is less likely to have haemophilia than one with XY.

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A. False He develops into a normal male. 

B. True The gonads fail to develop (Turner’s syndrome). 

C. False Abnormalities do not result. 

D. False He develops as a male with abnormal testes and a high risk of mental retardation (Klinefelter’s syndrome). 

E. True Haemophilia is an X-linked recessive condition.

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