If a normal woman marries a colourblind man, their

  • A

    All sons will be colourblind and daughters normal

  • B

    All daughters will be colourblind and sons normal

  • C

    All children will be normal

  • D

    All children will be colourblind

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$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic