MPSC PYQ

MPSC Rajyaseva 2022 GS Paper 1 — Question 43

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डोळ्यांचा रंग पांढरा असणाऱ्या ड्रॉसिलाच्या मादीचा, डोळ्यांचा रंग लाल असणाऱ्या ड्रॉसिलाच्या नरा बरोबर संकरण झाले, तर त्यांच्या पहिल्या F1 पिढीतील सर्व मादी ड्रॉसिलांच्या डोळ्यांचा रंग कोणता असेल ? What will be the eye colour of all female individuals in F1 generation when a white eyed female Drosophila is crossed with a red eyed male Drosophila?

1)पांढरा / White
2)लाल / Red✓ Correct
3)लाल आणि पांढरा यांचे मिश्रण / Mixture of Red & White
4)लाल आणि निळा यांचे मिश्रण / Mixture of Red & Blue

In Drosophila, eye color is X-linked. A white-eyed female (XwXw) crossed with a red-eyed male (XWY) gives all red-eyed females in the F1 generation because they receive a dominant XW from the father.

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