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Multiple Choice
Which of the following is an example of a transgenic organism?
A
A fish that has been selectively bred for larger size
B
A mouse genetically modified to express human insulin
C
A bacterium used in fermentation to produce yogurt
D
A plant grown using traditional cross-breeding techniques
Verified step by step guidance
1
Understand the definition of a transgenic organism: A transgenic organism is one that has been genetically modified to contain a gene or genes from another species. This process involves the insertion of foreign DNA into the organism's genome.
Analyze each option to determine if it involves genetic modification with foreign DNA:
Option 1: A fish that has been selectively bred for larger size. Selective breeding involves choosing parents with desirable traits to produce offspring with those traits. It does not involve genetic modification with foreign DNA.
Option 2: A mouse genetically modified to express human insulin. This involves inserting the human insulin gene into the mouse's genome, making it a transgenic organism.
Option 3: A bacterium used in fermentation to produce yogurt. This process typically involves natural bacteria and does not involve genetic modification with foreign DNA. Option 4: A plant grown using traditional cross-breeding techniques. Cross-breeding involves combining the traits of two plants through natural reproduction, not genetic modification with foreign DNA.