midterm1mcdb101bspring2007

midterm1mcdb101bspring2007 - Name _ Perm #_ Signature_...

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Name _____________________________ 1 Perm #________________________ Signature________________________ grade =______________ /100 pts. MCDB 101B Spring 2007 MIDTERM 1 EXAM DO NOT OPEN THIS EXAM UNTIL YOU ARE INSTRUCTED TO DO SO This exam should have 6_ pa ges, please count them now. Put your name on every page of the exam. Don't spend all your time answering one question, allocate your time among the questions appropriately. You may use a simple calculator if you like. You should show how you arrived at your conclusions to receive full credit for your answer. Barbara McClintock, Corn Geneticist 1902-1992 1983 Nobel Prize in Medicine (Courtesy of the Cold Spring Harbor Laboratory Archives
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Name _____________________________ 2 1. (20 pts) A newly discovered plant from the jungles of Borneo showed a variety of flower colors including blue, green, blue-green, red, and white. . Individuals were crossed in a series of experiments and the resulting F1 and F2 progeny are shown in the following table Cross Parents F1 F2 A green x blue blue-green 1/4 blue, 1/2 blue- green, 1/4 blue B red x green red 3/4 red, 1/4 green C red x blue red 3/4 red, 1/4 blue D white x blue 1/2 white, 1/2 red E white x white 2/3 white, 1/3 red A) Define alleles and/or gene symbols and give the genotypes of each of the parental lines. Be sure to use symbols which indicated how many genes are involved in these crosses. B)
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This test prep was uploaded on 04/15/2008 for the course MCDB 108b taught by Professor Christoffersen during the Spring '08 term at UCSB.

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midterm1mcdb101bspring2007 - Name _ Perm #_ Signature_...

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