midterm_2_Feb_11.DOC

midterm_2_Feb_11.DOC - _ Last name Circle TA name _ First...

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_________________ _________________ _________________ Last name First name Student number Circle TA name Paula Wade John Andy Stacey 2nd Midterm Exam LS 4 Lecture 2 Feb 11, 2002 BE SURE TO SHOW YOUR WORK FOR FULL CREDIT 1. Joey has sickle cell anemia. Applying protein electrophoresis to blood hemoglobin from Joey and his parents gave these results: There are many Joey’s in this world with identical electrophoretic results. What do they tell us about sickle cell anemia? Joey’s sister was typed and has only the fast band. What is the chance she is a heterozygous carrier for sickle cell anemia?
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2. Pure breeding strain crosses of black x agouti mice give all agouti progeny. Black x cinamon give all cinamon colored progeny. A cross of the agouti F1 x the cinamon F1 from the above crosses give 50 agouti, 25 cinamon and 25 black progeny. How many genes for coat colors differ between the black, agouti and cinamon strains? Propose gene and allele designations to explain these results. Indicate the dominance relations between the alleles.
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This note was uploaded on 07/08/2009 for the course LIFESCI ls 4 taught by Professor Merriam during the Winter '08 term at UCLA.

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midterm_2_Feb_11.DOC - _ Last name Circle TA name _ First...

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