quiz6 key - AGRY 320 GENETICS Spring 2011 QUIZ#6 NAME...

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AGRY 320 GENETICS Spring 2011 April 22, 2011 QUIZ #6 NAME ______________________________________________ Carefully read the material and the instructions and answer the questions. Feel free to use the back of this page to perform work so that you can clearly place your answers in the spaces provided. Answer the questions by circling all of the correct or the most likely correct answers.
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Chromosome Rearrangements (5 points each question) 1. A marigold breeder is working with two simply inherited genes ( fc and R ). These genes normally segregate independently. However, after making a cross with an Australian variety, he finds that the F 1 of that cross are semi-sterile and that fc - R recombinant types are always absent. Which of the following is the most likely explanation for this result (circle the correct answer): a. Australia is in the southern hemisphere. b. There has been a duplication of the disease resistance gene. c. Plant diseases in Australia are different from those in the U.S.
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