A plasmid vector containing 4800 base pairs is prepared to carry a gene for a medically useful protein. A restriction enzyme removes 600 base pairs from the plasmid before a donor fragment of 1000 base pairs is joined using DNA ligase.
What percentage of the recombinant plasmid is DNA retained from the original plasmid?
80.8%80.8\%80.8%
19.2%19.2\%19.2%
12.5%12.5\%12.5%
87.5%87.5\%87.5%
100 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.