A boy is colour blind, in his two sisters one is colour blind and one is carrier $(normal)$. Then who is colour blind in his family
Father
His grand father and mother
Mother
His grand father
Study the pedigree chart given below.
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What does it show?
Which of the following is a sex-linked character
If a colour blind woman marries a normal visioned man, their sons will be
Which of these is not a Mendelian disorder?
If a boy's father has haemophilia and his mother has one gene for haemophilia; what is the chance that the boy will inherit the disease