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6.1 Reproduction

6.1 Reproduction

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Question 30

Sickle-cell anaemia is an inherited genetic disorder caused by a recessive allele (sss). The dominant allele (SSS) represents healthy hemoglobin production.

A mother with genotype SsSsSs and a father with genotype ssssss plan to have a child.

a.

What scientific term describes the genotype of the father?

[1]
b.

What is the percentage chance that their child will inherit sickle-cell anaemia (genotype ssssss)?

[3]
Markscheme

6.1 Reproduction Questions

  1. GCSE
  2. /Biology
  3. /6.1 Reproduction

76 exam-style questions on AQA GCSE Biology 6.1 Reproduction, covering 6.1.1 Sexual and asexual reproduction, 6.1.2 Meiosis, 6.1.3 Advantages and disadvantages of sexual and asexual reproduction, 6.1.4 DNA and the genome, 6.1.5 DNA structure, 6.1.6 Genetic inheritance, 6.1.7 Inherited disorders, and 6.1.8 Sex determination. Each one has a worked solution and a mark scheme showing where the marks go.

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