1
1 mark
1 markWhich of the following characteristics show discontinuous variation?
Length of a foot
Body mass
Tongue rolling
Height
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Variation (Cambridge O Level Biology)
Exam Questions
27 mins9 questions21 mark
1 markWhich of these phenotypes is affected by both environmental and genetic factors?
Tongue rolling
Blood group
Body mass
Sickle cell anaemia
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31 mark
Which human feature shows discontinuous variation?
blood group
hair colour
height
foot length
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11 mark
1 markA woman who has blood group A and a man who has blood group B have four children, each with a different blood group; A, B, AB and O.
What types of variation does this show?
Discontinuous and genetic
Continuous and genetic
Continuous, environmental and genetic
Discontinuous, environmental and genetic
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11 mark
1 markThe graph below shows the height of bean plants grown from 1000 bean seeds.
What type(s) of variation can be seen in the graph?
Discontinuous only
Continuous only
Neither continuous or discontinuous
Both continuous and discontinuous
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