You are studying a particular genetic system of unknown function in humans from populations across the globe. Ka$/$Ks values for this system are statistically significantly greater than one. This suggests to you that should consider that:

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Group of answer choices $($choose all that apply$)$

these genes could be involved in immunity response to local pathogens $($think about how variable pathogen populations are across the earth.$)$

these genes could be involved in processing of diet $($think about how diets vary across the globe.$)$

these genes could be involved in temperature regulation $($think about temperature variations across the globe.$)$

these genes all show the behavior of the Disposable Soma Hypothesis.