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Pedigree Analysis

If a man with...

Question

If a man with an X-linked dominant disease has six sons with a woman having a normal complement of genes, then the sons will-
1 not show any symptoms of the disease
2 show strong symptoms of the disease
3 three will show a disease symptom , while three will not
4 five will show a disease symptom, while one will not.

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Solution

Sons will not suffer from this disease as father donates only Y chromosome to its son. So X linked diseases of father would be inherited by daughters.

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