1234 567A±argA±1A±argA±argA±argA±1A±1A±argA±1A±1a±arga±1a±arga±arga±1a±arga±argA±1A±argA±1A±arg12712510036246a±1 a±arga±1 a±1 a±1 a±arga±1 and they fell into the seven classes given above. (Forsimplicity, they are shown as tetrads.)a.Deduce the linkage arrangement of the mating-type locus and the arg-1locus. Include the cen-tromere or centromeres on any map that you draw.Label allintervals in map units.b.Diagram the meiotic divisions that led to class 6.Label clearly.UNPACKING THEPROBLEM1. Are fungi generally haploid or diploid?2. How many ascospores are in the ascus ofNeurospora?Does your answer match the numberpresented in this problem? Explain any discrepancy.3. What is mating type in fungi? How do you think itis determined experimentally?4. Do the symbols Aand ahave anything to do withdominance and recessiveness?
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