Restriction enzymes remove a fragment of 600 base pairs from a plasmid containing 4200 base pairs. A gene fragment containing 900 base pairs is joined in its place using ligase.
What percentage of the recombinant plasmid consists of the inserted gene fragment?
17.6%17.6\%17.6%
20%20\%20%
25%25\%25%
15.8%15.8\%15.8%
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.