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2. Ở một loài sinh vật, cơ thể bình thường có kiểu gen Dd. Do đột biển đã làm cơ thể có kiểu gen Od. Theo em loại đột biến nào xảy ra? Nêu cơ chế phát sinh loại đột biến đó? giúp zới ạaaaaaaaaaaaaaaaa
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