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Q. No.In Drosophila, the sex is determined by:
| 1. | The ratio of the number of X-chromosomes to the sets of autosomes |
| 2. | X and Y chromosomes |
| 3. | The ratio of pairs of X-chromosomes to the pairs of autosomes |
| 4. | Whether the egg is fertilized or develops parthenogenetically |
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Subtopic: Â Chromosomal Basis of Inheritance: Introduction |
AIPMT - 2003
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NEET 2026 - Target Batch - Vital
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