Genetic and Environmental Variation Flashcards

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What is variation?

Variation refers to the unique characteristics that differentiate individuals of the same species, such as different eye colours.

What are the two main categories of variation?

The two main categories of variation are genetic variation and environmental variation.

What is genetic variation?

Genetic variation refers to differences in characteristics caused by genetic information passed down from parents, such as eye colour and blood group.

What is environmental variation?

Environmental variation refers to differences in characteristics caused by external factors in an organism’s surroundings, such as diet, lifestyle choices and climate.

Give examples of inherited variation.

Examples of inherited variation include eye colour, blood group, skin colour and hair colour.

How can height and weight be influenced by both genetic and environmental factors?

Height and weight are influenced by genetic information from parents and environmental factors like nutrition and lifestyle.

For example, malnutrition can prevent reaching potential height, and an unbalanced diet can lead to being overweight.

Revision Notes
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