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跳躍基因(transposons, transposable elements, TE)，是一段可以從染色體DNA上單獨複製或斷裂下來，其環化後再插入另一位點，因而影響插入位點上的基因調控。根據其機制不同分成兩類：「複製-貼上」的第一型跳躍基因(“copy and paste”, class I TEs)，與「剪下-貼上」的第二型跳躍基因(“cut and paste”, class II TEs)

(A)(B)人類、原核生物、植物都有存在跳躍基因

(C)(D)A transposable element (TE, transposon, or jumping gene) is a DNA sequence that can change its position within a genome, sometimes creating or reversing mutations and altering the cell's genetic identity and genome size. Transposition often results in d...

跳躍基因(transposons, transposable elements, TE)，是一段可以從染色體DNA上單獨複製或斷裂下來，其環化後再插入另一位點，因而影響插入位點上的基因調控。根據其機制不同分成兩類：「複製-貼上」的第一型跳躍基因(“copy and paste”, class I TEs)，與「剪下-貼上」的第二型跳躍基因(“cut and paste”, class II TEs)

(A)(B)人類、原核生物、植物都有存在跳躍基因

(C)(D)A transposable element (TE, transposon, or jumping gene) is a DNA sequence that can change its position within a genome, sometimes creating or reversing mutations and altering the cell's genetic identity and genome size. Transposition often results in duplication of the same genetic material.

(E)In fact, transposons can drive the evolution of genomes by facilitating the translocation of genomic sequences, the shuffling of exons, and the repair of double-stranded breaks. Insertions and transposition can also alter gene regulatory regions and phenotypes.