problem set 2 key

# problem set 2 key - Biol 313 Problem set 2 1 a The order of...

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Biol 313 Problem set 2 1. a) The order of the three genes is w – y – ct b) The F1 females were w y + / + + ct. Progeny were +- yy ctct and ww +- +- (SCO) ww yy ctct and +- +- +- (SCO) +- +- ctct and ww yy +- (parental) +- yy +- and ww +- ctct (DCO) c) The map distance between w and y is 2.03. (32 + 28 + 5 + 3)/3336 x 100= 2.03. The map distance between y and ct is 16.01. (261 + 265 + 5 + 3)/3336 x 100=16.01. d) The Coefficient of Coincidence for this cross is 0.846. (261 + 265)/3336= 0.15767 (32 + 28)/3336=0.017986 Expected DCO=0.15767 x 0.017986=0.0028359 Observed DCO=(5 + 3)/3336=0.0023981 Coefficient of Coincidence-0.0023981/0.0028359=0.846. 2. The map is -------ade-------pro-------met-------gal-------str-------ryl-------ser-------mal------- Minutes between: 20 12 7 10 9 10 5 17 Insertion A I------------ Insertion B ----------I Insertion C ---------------I 3. If the chromosomes of the mouse with the crossovers undergoes alternate segregation, five possible gametes could be produced by the F1 individual. These are:

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problem set 2 key - Biol 313 Problem set 2 1 a The order of...

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