LSCI 204 Study Guide - Final Guide: Centimorgan, Genetic Linkage, Chromosome
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Due before 5 pm on thursday, september 27. A total of 1000 progeny from these crosses are then evaluated for each of the four traits. For simplicity, the recessive traits are designated a, b, c, and d while the corresponding dominant traits are designated with a + . The phenotypes and number of each of the sixteen possible phenotypic classes are given below: Number a b c d a b c + + + + d a b + d. + + c + a + c d. + b c d a + + + a b + + + + c d a + + d. + b + d a + c + 2 (a) determine the two-factor cross distance between markers c and d in cm. (b) what can you conclude about the phenotypes of the two true-breeding parental lines.
