While most wild E.coli usually have flagella,many lab strains have lost their flagella.What is a likely cause of this loss?

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Quizplus · Accepted Answer

Lab strains of E.coli are typically grown in stable environments and do not need to move around as much as wild strains. Therefore, there is less evolutionary pressure to maintain costly structures such as flagella, leading to their loss through reductive evolution.

While Most Wild E