4.19 Alleles
Exam question
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State what is meant by an allele.
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Total for this question: 1 mark
4(b) INHERITANCE · EXAM QUESTIONS
4.19 Alleles
13 exam-style questions. Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.
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4.19 Alleles
Exam question
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How many alleles of each gene does a body cell carry?
(1)Total for this question: 1 mark
4.19 Alleles
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Explain why a gamete carries only one allele of each gene.
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Total for this question: 2 marks
4.19 Alleles
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Explain how different alleles produce different characteristics.
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Total for this question: 2 marks
4.19 Alleles
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Describe what is meant by a dominant allele.
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Total for this question: 2 marks
4.19 Alleles
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Describe what is meant by a recessive allele.
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Total for this question: 2 marks
4.19 Alleles
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Explain how a new allele can arise.
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Total for this question: 2 marks
4.19 Alleles
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Suggest why two brown-eyed parents can have a blue-eyed child.
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Total for this question: 2 marks
4.19 Alleles
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What is a homozygous individual?
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4.19 Alleles
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Identify the genotype of a person heterozygous for a gene with alleles R and r.
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Total for this question: 1 mark
4.19 Alleles
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Explain why a person can carry an allele for a disease without showing symptoms.
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Total for this question: 2 marks
4.19 Alleles
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Compare genes and alleles.
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Total for this question: 2 marks
4.19 Alleles
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Explain why identical twins have the same alleles.
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Total for this question: 2 marks