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6.1 Reproduction

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Question 5

In a species of beetle, striped wing cases are caused by the recessive allele sss.

Two beetles have plain wing cases. Each beetle has one parent with striped wing cases. The two plain beetles are crossed.

Assume each offspring is independent. What is the probability that neither of the next two offspring will have striped wing cases?

[1]
A

616\frac{6}{16}166​

B

116\frac{1}{16}161​

C

1516\frac{15}{16}1615​

D

916\frac{9}{16}169​

Markscheme

6.1 Reproduction Questions

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

62 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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