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1. Consider the following crosses involving three different plants (A, B, and C)

ID: 214991 • Letter: 1

Question

1. Consider the following crosses involving three different plants (A, B, and C) that all yield orange, smooth seeds. Plants A, B, and C are each individually crossed with a plant that produces yellow, rough seeds. 100 progeny plants from each cross were sorted into the following phenotypic classes: 51 orange, smooth 49 yellow, smooth A: B 100 orange, smooth 24 orange, smooth 26 orange, rough 25 yellow, smooth 25 yellow, rough C: What were the genotypes of plants A, B, and C? Use gene symbols of your own choosing, just make sure you define them.

Explanation / Answer

yellow-yy

orange-oo

smooth-ss

rough-rr

A 51-ooss ,49-yyss

B 100-ooss

C 24-ooss, 26-oorr, 25-yyss, 25-yyrr