You take a bacterial sample from a student\'s unwashed hands. You take a bacteri

Question

You take a bacterial sample from a student's unwashed hands.
You take a bacterial sample from a student's unwashed feet.

These samples give rise to an experimental design that includes two treatments: sex (male and female) and appendage (hand and foot). Think of this as a 2X2 matrix with four cells: male hands, male feet, female hands, and female feet. Do you expect there to be any differences due to sex or appendage type? Think about the types of differences you might see: they might include abundance of bacteria, differences in the type of bacteria, and occurrence of fungi in addition to bacteria.

Explain any predicted differences among the four cases and give a plausible explanation for these differences.

Explanation / Answer

male, feet male, hands female, feet female, hands I would predict that the feet may have more facultative anaerboic microbes than the hands. If any obligate anaerobes are found I would predict them to be on feet, not hands. The environment provided by the student hosts will differ slightly based on the gender. My hypothesis is that those differences are statistically insignificant.

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