In his paper Mendel reported that he further tested his hypo

In his paper, Mendel reported that he further tested his hypothesis of independent assortment by planting F_2 seeds from his seed shape and color dihybrid cross and scoring the F_3 progeny. In one of these experiments, he planted 301 round, yellow F_2 seeds, allowed the plants to self-fertilize and scored the F_3 seeds produced by each plant. He observed 38 F_2plants which produced only round, yellow seeds, 65 F_2 plants which produced all round seeds that segregated 3 yellow to 1 green, 60 F_2 plants which produced all yellow seeds that segregated 3 round to 1 wrinkled, and 138 F_2 plants which produced seeds in the 9:3:3:1 phenotypic ratio that he had previously observed with the F_2 seeds. Use chi-square analysis to test whether or not the observed number of genotypes in the yellow and round-seeded types F_2 phenotypic class conforms to the expected number, consistent with Mendel\'s hypothesis of independent assortment. What is the chi-square statistic you calculated (rounded to two decimal places)? 1.52 1.67 9.48 26.88 52.33 105.12

Solution

A) 1.52

Mendel\'s Law of Independent Assortment. Definition: The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860\'s. One of these principles, now called Mendel\'s law of independent assortment, states that allele pairs separate independently during the formation of gametes.