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प्रश्न
Which of the following organisms exhibits the XX–XY sex determination system?
विकल्प
Birds and butterflies
Honeybees and ants
Humans and Drosophila
Grasshoppers and some insects
MCQ
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उत्तर
The XX–XY sex determination system is characteristic of humans, Drosophila, and most mammals. In this system, females possess two X chromosomes (XX) and are homogametic, while males possess one X and one Y chromosome (XY) and are heterogametic, determining the sex of offspring.
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