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In Drosophila melanogaster ,...

In Drosophila melanogaster ,

A

White eye colour is dominant over red eye colour and its gene is located on autosome

B

Red eye colour is dominant over white eye colour and its gene is located on autosome

C

White eye colour is dominant over red eye colour and its gene is located on the X chromosome

D

Red eye colour is dominant over White eye colour and its gene is located on the X chromosome

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding Drosophila melanogaster and the inheritance of eye color, we will analyze each statement provided in the question. ### Step-by-Step Solution: 1. **Understanding the Traits**: In Drosophila melanogaster, eye color is a well-studied trait. The two primary eye colors are red and white, with red being the wild-type color. 2. **Analyzing Statement 1**: - Statement: "White color is dominant over red color and this gene is located in autosome." - Analysis: This statement is incorrect because the gene for eye color is located on the X chromosome, not an autosome. Additionally, red is dominant over white, not the other way around. 3. **Analyzing Statement 2**: - Statement: "Red color is dominant over white color and the gene is located in autosome." - Analysis: While it is true that red is dominant over white, the gene is not located on an autosome; it is located on the X chromosome. Thus, this statement is also incorrect. 4. **Analyzing Statement 3**: - Statement: "White color is dominant over red color and the gene is located on X chromosome." - Analysis: This statement is incorrect. While it correctly states that the gene is located on the X chromosome, it incorrectly claims that white is dominant over red. 5. **Analyzing Statement 4**: - Statement: "Red color is dominant over white color and is located on the X chromosome." - Analysis: This statement is correct. The gene for eye color is indeed located on the X chromosome, and red eye color is dominant over white eye color. ### Conclusion: The correct statement among the options is: "Red color is dominant over white color and is located on the X chromosome." ### Final Answer: Option 4 is the correct answer. ---
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