iGCSE Biology (0610)-17.4 Monohybrid inheritance – iGCSE Style Questions Paper 2

Question

The diagram shows the sex chromosomes of a woman and of a man. Their genotypes for a recessive sex-linked condition are also shown.

             

      What are the chances that their daughter will show the sex-linked condition?
      A 0%              B 25%                      C 50%                   D 75%

Answer/Explanation

Ans

C

Question

The diagram shows the inheritance of ABO blood groups. The blood groups of some of the
        individuals are given.

                                       

          What could be Priya’s genotype?
          A IAIo              B IBIB                C IBIo                  D IoIo

Answer/Explanation

Ans

C

Question

The chart shows the inheritance of fur colour in a small mammal.
      If the allele for white fur is dominant, which animal must be heterozygous for the gene controlling
      fur colour?

       

Answer/Explanation

Ans

C

Question

The photomicrograph shows some red blood cells.

Answer/Explanation

Ans: A

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