In Neurospora, the White-Spore Allele (Ws) Results in White Spores

question 66

Multiple Choice

In Neurospora, the white-spore allele (ws) results in white spores rather than the wild-type black spores. Diploid ws / ws+ cells undergo meiosis followed by one round of mitosis to form ordered tetrads. Indicate if the pattern of spores seen in the tetrads are consistent with first-division or second-division segregation.
-ws; ws; ws^{+; ws+; ws; ws; ws+; ws+}

• A)first-division segregation pattern
• B)second-division segregation pattern

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