(a) Draw the pedigree of the given family whose ages are given below in the bracket
`{:("Normal father",(70),"Carrier mother",(65), "Normal son",(40)),("Affected son",(37),"Carrier daughter",(33),"Normal daughter",(30)):}`
(b) If this family can never have an affected girl then with the help of Punnet square method, whether this disease can be phenylketonuria, Yes or No ? (Let dominant allele-A, Recessive allele-a)

Explanation

(b) If a normal father is crosses with carrier mother then following results are obtained.

Putting the cross byy Punnett square method the result is written as follows :

The result show that this disease cannot be phenylketonuria. Phenylketonuria is a recessive human genetic disorder in which the enzyme converting dietary pheylalanie to typrosine is deficient causing excretion of phenylpyruvate in urine.