What is the recombination frequency-gene from the centromere

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What is the recombination frequency-gene from the centromere

In a tetrad analysis of a new ascomyete, youare observing a different in phenotype between spores – some haploid spores are shapedlike a square/cube (S) while other spores are round (r). When asquarespored strain is crossed with a roundspored strain, you observe 698 asciwith the pattern (SSSSrrrr), 245 asci with the pattern (SSrrSSrr),122 asci with the pattern (SSrrrrSS), and 124 with the pattern(rrSSSSrr).

What is the recombination frequency?
How far is this gene from the centromere?

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