Topic 14- Variation Flashcards

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0
Q

Examples of genetic variation are;

A

Eye colour
Hair colour
Flower colour
Free ear lobes etc

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1
Q

What causes variations?

A

Genetic and enviromental

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2
Q

Examples of environmental variation are;

A

Scars
Piercings
Hair style
Stunted growth in plants etc

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3
Q

What is continuous variation?

A

Where an individual can be at any point along a rang of variation. Example, height can range from the smallest to the tallest person in the world

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4
Q

What is discontinuous variation?

A

Distinct categories of variation. For example blood groups

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5
Q

What is asexual reproduction?

A

There is only one parent so the offspring are genetically identical. They are called clones

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6
Q

Reproduction increases variation. Why does this benefit humans?

A

If the environment changes, there will be a variety which will enable us to adapt to new enviroments

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7
Q

What is the process of new genes appearing?

A

Mutation

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8
Q

How is mutation caused?

A

Exposure to ionising radiation

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