Chapter 3, Problem 27PDQ

When working out genetics problems in this and succeeding chapters, alwaysassumethatmembersof the P₁ generation are homozygous, unless the information or data you are given require you to do otherwise.

To assess Mendel's law of segregation using tomatoes, a true-breeding tall variety (SS) is crossed with a true-breeding short variety (ss). The heterozygous tall plants (Ss) were crossed to produce the two sets of F₂ data as follows:

Set 1	Set II
30 tall	300 tall
5 short	50 short

(a) Using chi-square analysis, analyze the results for both datasets. Calculate x² values, and estimate the p values in both cases.

(b) From the analysis in part (a), what can you conclude about the importance of generating large datasets in experimental settings?