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In this lab, we explored Mendelian traits in humans. Now, let's...

In this lab, we explored Mendelian traits in humans. Now, let's consider another Mendelian trait: earlobe attachment. Review the images on page 80 of your lab manual that depict the earlobes of different individuals. Naveen is a biological anthropologist investigating the possibility of variation within this trait. He generates a hypothesis: If earlobe attachment is a Mendelian trait, then there will be two, distinct phenotypic expressions (attached earlobes and unattached earlobes). What data would you collect to help Naveen test this hypothesis? (Be sure to specifically describe any potential measurements you would take and what tools would be used to collect these data.) Imagine that you have now collected these data. What patterns in the data would support the hypothesis? (For example, "The hypothesis would be supported if we found data that indicated _____________.") What patterns in the data would cause you to reject the hypothesis? (For example, "The hypothesis would be rejected if we found data that indicated _____________.") Based on what you learned in this lab, do you think humans have numerous, clearly Mendelian traits? Why or why not?

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