Problem Set 2 - Genetics 380 : Spring, 2011 Take-Home...

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Take-Home Problem Set #2 Ch. 3 Q. 1 . In Dahlias, Purple flower (P) is dominant over white (p). Smooth leaves (S) are dominant over rough (s). Indicate if the progeny described from the following crosses is true (T) or False (F)- CROSS PROGENY EXPECTED TRUE or FALSE (a) PpSs x Ppss 3/8 Purple Smooth; 3/8 Purple Rough; 1/8 White Smooth; 1/8 White Rough . (b) PpSS x ppSs 1/2 Purple,Smooth; 1/4 White Smooth 1/4 White Rough . (c) Ppss x ppSs 1/2 Purple Smooth; 1/4 Purple Rough; 1/4 White Rough . (d) PpSs x ppss 1/2 Purple Smooth; 1/4 White Smooth; 1/4 White Rough . Q. 2 . Two first cousins (individuals IV.1 and IV.2 in the pedigree below) plan to marry, but the couple discover that their shared grandfather's sister died in infancy of Tay-Sachs disease [a rare autosomal recessive disorder (i.e., gene is not located on the X-chromosome; both males and females have two copies of the gene)]. What is the probability that the cousins' first child will have Tay-Sachs disease? (assume that all the people who marry into the family are homozygous normal).
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This note was uploaded on 09/29/2011 for the course GENETICS 380 taught by Professor Glodowski during the Spring '08 term at Rutgers.

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Problem Set 2 - Genetics 380 : Spring, 2011 Take-Home...

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