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GC BIOLOGY SMK BUNUT SUSU, PASIR MAS.

18 June 2010

F5 topic Inheritance (PYQ Extra question)


Form 5 - Topic 5: Inheritance  (PYQ-Soalan Tambahan)

SPM 2009
20        A boy has blood group A and his sister has blood group B.
            Which is the correct combination of genotypes belonging to their parents?


Father
Mother
A
AB
AB
B
AA
BB
C
AA
BO
D
BO
BO

21         Which of the following does not cause variation?
            Antara yang berikut yang manakah tidak menyebabkan variasi?
A          Crossing over   
B          Random fertilization
            C          Separation of sister chromatids
D          Independent assortment of chromosomes


Soalan struktur.

SPM 2009 ( Sebahagian)

 Diagram2.2 shows the formation of a type of genetic disorder.
    
     










(i)         State three characteristics of this genetic disorder.
        
         1. .........................................................................................................................................................

         2. .......................................................................................................................................................

         3. .........................................................................................................................................................
                                                                                                           [3 marks]

(ii)        Explain how a fault in the formation of cell R can cause this genetic disorder.
          
            ……………………………………………………………………………………...……………………………………………………………

            ………………………………………………………………………………………...………………………………………………………..
                                                                                                                              [3 marks]