Question: 1. Genetic mapping crosses such as two point test cross or threepoint test cross are useful in predicting map distances between twogene points. The calculation

1. Genetic mapping crosses such as two point test cross or threepoint test cross are useful in predicting map distances between twogene points. The calculation simply involves dividing the number ofrecombinant appearing offspring (lowest in frequency) by the totalnumber of offspring and multiplying times 100. We cannot use thismethod to determine gene distances on a chromosome when therecombination frequency reaches the vicinity of 50%. Why?

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