The diagrams labelled I, II and III below are illustration of fingerprints of three individuals.
Study the diagrams and use them to answer questions 2(a) to 2 (b).
Diagrams:
I III
(a) (i) Which type of variation is represented by the diagrams?
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[2 mark ]
(ii) Classify diagrams I, II and III
I ......................................................................................................
II ......................................................................................................
III .....................................................................................................[3 mark ]
(iii) Give the reasons for your classifications in 2(a)(ii) above
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(b) State and explain the application of this variation
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[5 marks]
(c) The genetic diagram below is that of a tall cowpea plant which was crossed with a dwarf
cowpea plant. Study the diagram and use it to answer questions 2( c) to 2( d)
TT X tt -IV
-V
-VI
Key - T - Tallness
t - Shortness
(i) What do the labels IV, V and VI represent in the diagram?
IV. ................................................……………………………………………………………………………….
V. …………………………………………………………………………………………………………………………………………
VI. ……………………………………………………………………………………………………………………………………….. [ 3 marks]
(ii)
What is the genotype of the individuals in VI?
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(iii) Which of the Mendelian laws of inheritance does the diagram represent?
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(d) (i) Using a genetic diagram illustrate a self cross between two of the individuals labelled VI
(ii) Assuming that 400 offspring arise from the cross in 2( d)(i) above, deduce how many of
them will be tall?
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[ 3 mark ]