Solutions For An Introduction to Genetic Analysis Chapter 2 Problem 1P

By cross pollinating the two different F₁ plants, the phenotype would be 3:1 and the genotype would be 1:2:1 ratio in the F₂.

The F₁ progeny generation is produced by crossing pure Yellow line and Green line. That means, YY X GG. The first filial generation was all yellow seeds. That is YG.

The second filial generation was obtained, as in figure 2-4 by self-pollinated flowers. They were three fourths yellow and one fourth green that means YG X YG, which resulted in YY, YG, YG, and GG. The phenotype ratio is 3:1.

If two different plants of the first filial generation are cross pollinated, that means cross between heterozygous yellow and homozygous green and the cross obtained will be:

YG X GG

This cross produces a different result from that of self pollination. The offspring are YG, YG, GG, and GG. The phenotype ratio is 1:1.

No, the same F₂ results would not be produced by cross pollinating two different F₁ plants.