Notice that the predicted percentages and laboratory percentages are not the same. These differences most likely result from a computation errora strong linkage between the genesexpected randomnessan unusual sample.

Predicted percentages describe expected results, but actual laboratory results can differ because of random variation in which individuals are sampled or produced. This ordinary chance variation is expected randomness, not necessarily a computation error or strong linkage between the genes. Therefore, the best answer is “expected randomness.”

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