2. Solved Papers
  3. EAMCET Medical

EAMCET Medical EAMCET Medical Solved Paper-1996

  • question_answer
    When chicken of F1 generation are mated among themselves, they produced an F2 generation of four kinds of birds, as far as comb type of plumage color are concerned in the following proportions: 9 rose comb blacks, 1 single comb white. 3 rose combs white, 3 single combs blacks. Based on this, find out which two, are the recessive characters in these birds:

    A)  black plumage and white plumage

    B)  single comb and white plumage

    C)  rose comb and single comb

    D)  rose comb and black plumage

    Correct Answer: B

    Solution :

                     According to law of independent assortment, the phenotypic dihybrid ratio is 9:3:3:1 (representing both dominant, one dominant one recessive, one recessive-second dominant and both recessive). Thus, singe comb and white plumage are recessive characters in these birds.


You need to login to perform this action.
You will be redirected in 3 sec spinner