Biology Topic Practice

GCSE Biology Variation

Variation refers to the differences in characteristics between individuals in a population.

Can you name two causes of variation?

What is Variation?

"Variation refers to the differences in characteristics between individuals in a population, caused by genetic and environmental factors."

Question 1

What is meant by variation in a population?

Question 2

Which characteristic is most likely to be influenced by both genes and the environment?

Question 3

Which statement about mutations is correct?

Question 4

Which characteristic is most likely to be influenced by both genes and the environment?

Causes of Variation

Genetic variation is caused by mutation and sexual reproduction.

Environmental variation is caused by the conditions in which organisms live and grow.

Exam Tip

Most variation is a result of both genetic and environmental factors interacting.

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