GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A straight line downwards
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A straight line upwards
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A bell-shape
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A flat line
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Detailed explanation-1: -The frequency distribution of a characteristic that presents a continuous variation is a normal distribution curve with a typical bell shape.
Detailed explanation-2: -This type of graph is called a histogram and is likely to look something like this: If your sample is size is large enough, a graph of continuous variation of an organism will almost always have a shape like the one above. This is known as normal distribution.
Detailed explanation-3: -Examples of continuous variation include things like a person’s height and weight. Examples of discontinuous variation include a person’s blood group or the color of a species of bird.
Detailed explanation-4: -There is no range of data. What chart do you use to plot discontinuous variation? You use a bar chart with gaps between the bars. This is because there is no range of data.
Detailed explanation-5: -Which are examples of discontinuous variation? Discontinuous: Eye colour, handedness & lobed/lobeless ears. Continuous: Hand span, arm length & height.