Page 17 - CB1.3 Genetic Varation sciPAD

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CB 1.3 GENETIC VARATION
PRINCIPLES OF GENETIC VARIATION
Discussion:
1. Discuss how your results show ‘variation’. 




2. Is height an example of ‘continuous’ or ‘discontinuous’ variation? Justify your answer. 





3. Explain why the results from your class do not show a smooth normal distribution curve.




4. State whether the following characteristics show ‘continuous’ or ‘discontinuous’ variation.
(a) Weight 
(b) Eye colour 
(c) Blood type 
(d) Hair colour 
(e) Fingernail growth rate 
(f) The ability to roll your tongue 
(g) Foot length 
(h) Gender 
5. The fur colour in rabbits is an example of continuous variation.
(a) Sketch a labelled graph for the distribution of fur colour within a large population
of wild rabbits.
(b) Suggest a reason why only a relatively small number of rabbits have either light or
dark fur. 


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