The most likely explanation for this circumstance is Gene redundancy.
What is Gene knockout?
Gene knockout may be defined as a type of genetic technique through which a specific gene from living organisms is eliminated or removed. Apart from this, the function of a specific gene is also terminated with this technique.
Gene redundancy may be characterized as an instance through which two or more genes perform an identical function and the inactivation of either one of them has little or no effect on the biological phenotype or pathway.
Therefore, gene redundancy is the most likely explanation for the given circumstance.
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