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An Arginine-Requiring Strain of Neurospora Is Crossed to a Wild-Type

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An arginine-requiring strain of Neurospora is crossed to a wild-type (prototrophic)strain.
a)In the first cross,half of the progeny are arginine-requiring and half are wild type.What does this tell you about the genetic basis of the arginine-requiring mutant?
b)In the second,the progeny are 83 arginine-requiring and 13 wild type.The germination percentage of ascospores is 95/100%.Explain these results simply,and tell briefly how you would confirm your explanation.

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a)The arginine mutant results from a mut...

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