Ques. A colour blind girl is rare because she will be born only when
A. her mother and maternal grand father were colour blind
B. her father and maternal grand father were colour blind
C. her mother is colour blind and father has normal vision
D. parents have normal vision but grand parents were colour blind.
Answer:B
Ques. A colour blind girl is rare because she will be born only when
A. her mother and maternal grand father were colour blind B. her father and maternal grand father were colour blind C. her mother is colour blind and father has normal vision D. parents have normal vision but grand parents were colour blind.