For determining chi-square or goodness of fit, the size of the population must be considered. Suppose in one cross of tall and dwarf plants, out of the 100 plants of F2, 70 are tall and 30 dwarf instead of 75 and 25 as expected from a 3: 1 ratio. Obviously there is a deviation of 5 from the normal. In [...]
After reading this article you will learn about the chi-square test and its interpretation. In genetic experiments, certain numerical values are expected based on segregation ratios involved. However, in actual field experiments exact values may not be obtained due to in-viability of certain pollen grains, zygotes, no germination of some seeds, or even death of few plants after germination. This [...]