Genetic engineering, also known as genetic modification or genetic manipulation, means that the genes of an organism are modified by humans.
This includes transferring genes from one species to another or removing genes.
This has many applications in medicine, research, agriculture, and the industry.
Some examples of genetic engineering are:
• Modified bacteria are able to produce human insulin.
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• Modified crops are resistant to diseases.
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• Mice lacking certain genes, used to study diseases.
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• Production of mRNA vaccines
Of the answer options, B. Altering the DNA of yeast to create vaccines, would also be an example of genetic engineering, and so, the right answer.