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.

Yes.

Explanation:

If the alleles presented by the ivory sample are equal to the alleles presented by the population sample, it means that the ivory sample comes from that population. However, it may happen that the ivory sample has different alleles than the population sample. In this case, the ivory sample can still be found in this population, but it can belong to another sample as well.