02GeneticsProblemsFQ

02GeneticsProblemsFQ - FocusQuestions:GeneticsProblems

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Focus Questions: Genetics Problems 1.  Mendel’s pea plants exist in both tall and short varieties.  You cross a true breeding tall strain to a  true breeding short strain and observe all tall offspring.  What does this tell you about tall and  short?  If you intercross the F 1 , what do you expect?  If you cross the F 1  back to the short parent,  what do you expect? 2.  In peas, round is dominant to wrinkled and tall is dominant to short (or dwarf).  If you cross a  true breeding round tall strain with a true breeding wrinkled short strain, what do you expect in  the F 1 ?  What would happen if you intercross the F 1 ?  If you cross the F 1  back to the wrinkled  short parent what do you expect? 3.  Consider the following hypothetical cross: Aa Bb CC    x    Aa bb Cc For all the following questions, assume that these loci are assorting independently. a.  What is the probability of all dominant?
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02GeneticsProblemsFQ - FocusQuestions:GeneticsProblems

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