Variation (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What two factors does an organism's phenotype depend on?
What two factors does an organism's phenotype depend on?
Genotype and environment
How are genes passed on from parents to offspring?
How are genes passed on from parents to offspring?
In sex cells
What creates genetic variation when offspring are produced?
What creates genetic variation when offspring are produced?
Combining genes from mother and father
Which individuals have the same genotype?
Which individuals have the same genotype?
Identical twins
Which is an example of environmental variation?
Which is an example of environmental variation?
Scars in animals
Why is weight determined by both genetics and environment?
Why is weight determined by both genetics and environment?
Diet affects it; genes affect metabolism
What introduces genetic variation in DNA?
What introduces genetic variation in DNA?
Mutations
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?
Becomes common quickly via selection
What does cystic fibrosis cause in the body?
What does cystic fibrosis cause in the body?
Thick sticky mucus in lungs
How does sexual reproduction cause genetic variation?
How does sexual reproduction cause genetic variation?
Alleles combine randomly in different ways
What environmental factor stunts plant growth?
What environmental factor stunts plant growth?
Infertile soil