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Genetic engineering involves the use of vectors - OCR Gateway - GCSE Biology - Question 14 - 2022 - Paper 1
Question 14
Genetic engineering involves the use of vectors. Which is an example of a vector? A. A set of unpaired bases on the end of a DNA molecule. B. A small ring of DNA ... show full transcript
Worked Solution & Example Answer:Genetic engineering involves the use of vectors - OCR Gateway - GCSE Biology - Question 14 - 2022 - Paper 1
Step 1
Which is an example of a vector?
Answer
In the context of genetic engineering, a vector is a molecule used to deliver genetic material into a target cell. Among the given options:
- A refers to bases that are part of a DNA structure but do not act as a vector.
- B describes a small ring of DNA (plasmid) present in a bacterium, which is a classic example of a vector used to introduce new genetic material into other cells.
- C refers to an enzyme and not a vector itself.
- D discusses an organism that has been genetically modified but does not identify a vector.
Thus, the correct answer is B: A small ring of DNA present in a bacterium.