Variation (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What two factors determine an organism's phenotype?
What two factors determine an organism's phenotype?
Genotype and environment
What is meant by the term 'genotype'?
What is meant by the term 'genotype'?
The genes an organism inherited
How is genetic variation created?
How is genetic variation created?
Combining genes from mother and father
Which organisms have the same genotype?
Which organisms have the same genotype?
Identical twins
How does the environment affect an organism?
How does the environment affect an organism?
Affects appearance during growth
Which is an example of an environmental effect on animals?
Which is an example of an environmental effect on animals?
Scars
Why is weight influenced by both genetics and environment?
Why is weight influenced by both genetics and environment?
Food eaten and genes affect metabolism and fat storage
How is genetic variation introduced?
How is genetic variation introduced?
By mutations in DNA sequence
What effect do most mutations have on phenotype?
What effect do most mutations have on phenotype?
No effect
What happens if a mutation is advantageous?
What happens if a mutation is advantageous?
Natural selection makes it common quickly
What is the usual outcome when mutations influence phenotype?
What is the usual outcome when mutations influence phenotype?
Unlikely to bring about new phenotype