Introduction to Genetic Analysis 147

Introduction to Genetic Analysis 147 - 44200_04_p115-150...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
123 4 567 A ± arg A ± 1 A ± arg A ± arg A ± arg A ± 1 A ± 1 A ± arg A ± 1 A ± 1 a ± arg a ± 1 a ± arg a ± arg a ± 1 a ± arg a ± arg A ± 1 A ± arg A ± 1 A ± arg 127 125 100 36 2 4 6 a ± 1 a ± arg a ± 1 a ± 1 a ± 1 a ± arg a ± 1 and they fell into the seven classes given above. (For simplicity, they are shown as tetrads.) a. Deduce the linkage arrangement of the mating- type locus and the arg-1 locus. Include the cen- tromere or centromeres on any map that you draw. Label all intervals in map units. b. Diagram the meiotic divisions that led to class 6. Label clearly. U NPACKING THE P ROBLEM 1. Are fungi generally haploid or diploid? 2. How many ascospores are in the ascus of Neurospora? Does your answer match the number presented in this problem? Explain any discrepancy. 3. What is mating type in fungi? How do you think it is determined experimentally? 4. Do the symbols A and a have anything to do with dominance and recessiveness?
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online