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4.3 Selective breeding and genetic modification

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Question 33
H

After a genetic engineering procedure, 600 bacteria are tested. Of these, 25% contain a plasmid. Of the plasmid-containing bacteria, 40% contain the required gene in that plasmid.

How many bacteria contain the intended recombinant vector?

[1]
A

150150150

B

606060

C

240240240

D

390390390

Markscheme

4.3 Selective breeding and genetic modification Questions

  1. GCSE
  2. /Biology
  3. /4.3 Selective breeding and genetic modification

44 exam-style questions on Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding. Each one has a worked solution and a mark scheme showing where the marks go.

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