Pedigree analysis is very important in human beings because
It helps genetic counselers to avoid disorders
It shows origin of traits
It shows the flow of traits in family
All of the above
Phenyketonuria is a genetic disorder of
Haemophilia, a $X$-linked recessive disease is caused due to deficiency of
Which of the following is an example of sex-linked disease?
Haemophilia is more commonly seen in human males than in human females because
If a colour blind woman marries a normal visioned man, their sons will be