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You were so intrigued that you wanted to re-do the experiment at home to show your mom how evidence of chromosomal cross-overs can be seen in an ascus!You go to a nearby magical forest and just by luck come across anascoma. You crush it on a slide and put it under a microscope thatyou have at home. When you look into the microscope, you see thateach ascus is either all black or all tan. Your mom wants to knowwhy she isn’t seeing half tan and half black like you toldher she would see. You call Dr. Black’s office from home andexplain what happened. He says “Oh yes, I know that magicalforest. It causes a mutation, but that mutation doesn’taffect meiosis or mitosis.” He had to go teach andcouldn’t tell you anything more. You decide that the magic inthe forest must have caused a mutation in the haploid spores tomake them have a certain affinity for a certain other type ofspore. If crossing over is not affected by the mutation, what isthe mutation doing to the haploid spores? (hint: thinkaffinity)

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