Transposons are movable elements of DNA that insert into new positions within th

Question

Transposons are movable elements of DNA that insert into new positions within the genome. A transposon may disrupt normal gene function, confer an evolutionary advantage, or have no effect on the organism. Select all scenarios in which a transposon has positively contributed to the evolution of the host's genome. Acquisition of a transposon that disrupts an enhancer element of a colorectal cancer tumor-suppressor gene Acquisition of a transposon carrying a tetracycline resistance gene in a bacterium. Insertion of a transposon encoding a heat shock protein into the Aquisition of a transposon carrying an adhesin gene into the Lactobacillus casei genome Insertion of a transposon into the gene encoding Factor VIll, an essential blood-clotting protein L

Explanation / Answer

The below mentioned scenario contribute politively to the host evolution.

2) acquisition of a transposon carrying a tetracyclin resistance gene in a bacterium

3) insertion of a transposon encoding a heat shock protein into the genome of a plant.

4) aquisition of a transposon carrying an adhesin gene into the Lactobacillus casei genome.

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