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Morgan chose fruit files ( Drosophila me...

Morgan chose fruit files ( Drosophila melanogaster ) as the study model for his experiment. Certain reason made this organism suitable for the study . Which of the following is not one such reason ?

A

They could be grown on simple synthetic medium in the laboratory .

B

They taken about 6 weeks to complete their life cycle .

C

A single mating could produce a large number of progeny files .

D

The male and female files are easily distinguishable .

Text Solution

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The correct Answer is:
To solve the question regarding why Morgan chose fruit flies (Drosophila melanogaster) as a study model, we need to evaluate the reasons provided and identify which one is not a valid reason for their suitability in genetic studies. ### Step-by-Step Solution: 1. **Identify the Organism**: Morgan chose Drosophila melanogaster, commonly known as fruit flies, for his genetic experiments. 2. **Evaluate the Reasons**: We need to analyze the reasons given in the question to determine which one is not suitable. - **Reason 1**: Fruit flies can be grown on a simple synthetic medium in the laboratory. - **Evaluation**: This is a true statement. It is easy and cost-effective to culture fruit flies in a lab setting. - **Reason 2**: They take about six weeks to complete their life cycle. - **Evaluation**: This statement is false. Fruit flies actually take about two weeks to complete their life cycle, making this the incorrect reason. - **Reason 3**: A single mating can produce a large number of progeny flies. - **Evaluation**: This is a true statement. A single mating can result in a large number of offspring, which is beneficial for genetic studies. - **Reason 4**: Male and female flies are easily distinguishable. - **Evaluation**: This is also a true statement. Male and female fruit flies can be easily identified by their physical characteristics, such as eye color. 3. **Conclusion**: The only statement that is not a valid reason for Morgan's choice of Drosophila melanogaster is the second one, which incorrectly states that they take about six weeks to complete their life cycle. ### Final Answer: The reason that is not suitable for Morgan's choice of Drosophila melanogaster is: **They take about six weeks to complete their life cycle.** ---
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