quiz4 - Biol241, Quiz 4 2/5/2010 [Questions 1-3] In...

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2/5/2010 [Questions 1-3] In Neurospora , crosses a b X + + (in which a and b represent different loci in each cross) are made. From each cross, 100 linear asci (sacs) are analyzed, and the results are shown in the table below. Number of asci of type a b a + a b a b a b a + a + a b a + a + + b + + + b + b + + + b + + + + + + + b + + + + + b + b a + a b a + a b Cross 1 34 34 32 0 0 0 0 2 71 1 18 1 8 0 1 1) In Cross 1, what is the genetic distance between a and the centromere? a) 0 m.u. (map unit) b) 32 m.u. c) 16 m.u. d) 17 m.u. 2) In Cross 1, what is the genetic distance between a and b ? a) 49 m.u. b) 17 m.u. c) 16 m.u. d) a and b are on different chromosomes 3) In Cross 2, what is the genetic distance between a and the centromere? a) 10 m.u. b) 5 m.u. c) 13.5 m.u. d) 11 m.u. 4) In Cross 2, what is the genetic distance between a and b ? a) 5.5 m.u. b) 10 m.u. c) 11 m.u. d) a and b are on different chromosomes
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This note was uploaded on 03/30/2011 for the course BIOL 241 taught by Professor Henrychang during the Spring '10 term at Purdue University-West Lafayette.

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quiz4 - Biol241, Quiz 4 2/5/2010 [Questions 1-3] In...

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