For a (fictitious) haploid fungus, the starting point in the biosynthesis of the

Question

For a (fictitious) haploid fungus, the starting point in the biosynthesis of the amino acid arginine is Compound X, which is always present in, and absorbed from the environment. The arginine biosynthetic pathway is:

A mutant strain of genotype a- (lacking enzyme A) is crossed to a mutant strain of genotype b- (lacking enzyme B). What proportion of the progeny is expected to grow on medium supplemented with Compound Y

(Please show work)

For a (fictitious) haploid fungus, the starting point in the biosynthesis of the amino acid arginine is Compound X, which is always present in, and absorbed from the environment. The arginine biosynthetic pathway is: A mutant strain of genotype a- (lacking enzyme A) is crossed to a mutant strain of genotype b- (lacking enzyme B). What proportion of the progeny is expected to grow on medium supplemented with Compound Y

Explanation / Answer

since mutation is in single gene on each strain. crossing over will produce progeny will functional copies from both strians thus, progeny is is expected to grow on media suplemnted with Compound Y.

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