A colourblind man marries a normal vision woman whose father was colourblind. They have a first child as a son. What are the chances that a child would be colourblind?

Question

A colourblind man marries a normal vision woman whose father was colourblind. They have a first child as a son. What are the chances that a child would be colourblind? (A) 25% (B) 50% (C) 100% (D) 0%

Tardigrade Admin · Accepted Answer

Clour blindness is X linked genetic recessive disorder in which a carrier female passes its X- linked recessive gene to 50% of its male progeny and 50% male progeny are normal. <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/b-hecvlkdlw0rr.png" />

Q. A colourblind man marries a normal vision woman whose father was colourblind. They have a first child as a son. What are the chances that a child would be colourblind?

25%

50%

100%

0%

Clour blindness is X linked genetic recessive disorder in which a carrier female passes its X- linked recessive gene to 50% of its male progeny and 50% male progeny are normal.