Question

Study the given pedigree chart in which neither of the parents shows the trait but the trait is present in both male and female children. Answer the following questions :

Study the pedigree analysis given below : Answer the following questions : (A) Write genotypes of c and d. (B) Identify whether the trait is (i) Sex-linked or autosomal (ii) Dominant or recessive

The maternal grandfather of a boy is colourblind, but his maternal grandmother is normal. The father of the boy is also normal. What is the probability of this boy being colourblind?

Consider the information given below about a family and answer the questions that follow. • Rafiq, a ten year old boy, injured himself badly during the games period in school. He was rushed to a nearby hospital as the bleeding could not be stopped despite the first aid given to him. • His uncle had lost his life in a similar condition. • Rafiq's entire family underwent a genetic analysis to detect Bleeder's disease. His parents, sister Farah and paternal grandmother were tested to detect the disease. • Rafiq's mother and grandmother were found to be carriers of the Bleeder's disease.