1) which of the following is from the chromosomal mutation? a) deletion b) insertion  c) inversion d) substitution  e) translocation 2) which of the following is a mutagen a) chemicals b) vitamins c) carbohydrate d) x-ray 3) all of the mutation are harmful a) true b) false

chromosomal mutation

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嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?