Go to: http://media.hhmi.org/biointeractive/click/elephants/dna/index.html
And Click on Case Two
1. Click on the Application section.
a. Study the gel. Why does the ivory sample contain only two bands while the other lanes (samples A and B) have multiple bands?
b. If an ivory sample has two alleles that are also found in a population sample, does that tell you with certainty that the ivory sample came from that population? Explain your answer.

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