UK GCSE · Biology
Inheritance, Variation and Evolution
16 practice questions, each with the answer and an explanation.
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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 16 questions
- What name is given to different forms of the same gene?
- A person has the genotype Bb. What does this tell you?
- Two heterozygous parents (Bb) have children. What is the probability that a child will be homozygous recessive (bb)?
- Which sex chromosomes does a human female have?
- What is the probability that a child will be male?
- Which condition is caused by a dominant allele?
- Which is the best definition of a mutation?
- What is the name for the sugar and phosphate backbone with bases that forms a DNA strand?
- Which pair shows the correct complementary base pairing in DNA?
- What is a gene?
- Which is an example of continuous variation?
- What is selective breeding?
- Which is a possible risk of selective breeding in dogs?
- What is the first step in Darwin's theory of evolution by natural selection?
- Why are fossils useful evidence for evolution?
- What is a species?
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