An individual expressing the dominant phenotypes for kernel color and texture could have one of four different genotypes. For each potential genotype, determine the expected frequency of each phenotypic combination which would be observed following a testcross. (Remember Purple: PP, Smooth: SS, Yellow: pp, Wrinkled: ss)

Assume that, in a series of experiments, plants with round seeds were crossed with plants with wrinkled seeds and the following offspring were obtained: 215 round and 185 wrinkled. How do you explain these observations and what would be the expected number of offspring with round seed and with wrinkled seed?   The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is expected to show 200 round and 200 wrinkled seed. The plants with round seeds are homozygous for the round seed phenotype and F1 offspring is expected to show 300 round and 100 wrinkled seed. The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is expected to show 100 round and 300 wrinkled seed. The plants with round seeds are homozygous for the round seed phenotype and F1 offspring is expected to show 200 round and 200 wrinkled seed. The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is…

How can you tell whether or not there are blue kernels? The Y was dominant. Set up and complete a Punnett square for a cross of two of the F1 from Step 1 (above). Answer these questions: What are the genotypes of the F2 generation? YY, Yy, yy What are their phenotypes? YY, Yy(yellow) , yy(blue) Are there more or fewer blue kernels than in the F1 generation?            F2 generation has more blue kernels than F1. Identify the four possible gametes produced by the following individuals (Y = yellow, y = blue, S = smooth, s = wrinkled): YY Ss: YS Ys YS Ys Yy Ss: YS Ys yS ys     Create a Punnett square using these gametes as P1 and determine the genotypes of the F1.   YS Ys YS YYSS YYSs Ys YYSs YYss yS YySS YySs ys YySs                Yyss   What are the phenotypes? What is the ratio of those phenotypes?           The phenotypes would be:           (a) Yellow with smooth           (b) Yellow with wrinkled            3:1…

Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that homozygote pp exhibits recessive epistasis over the seed color pathway, converting a white pigment into yellow, which then becomes orange in the presence of a Q allele, or red in the presence of R. Individuals with both Q and R alleles show pink seeds. In a cross of PpQqRr individuals with ppqqrr individuals, what is the ratio of white-seeds to red seeds? а. 1:4 b. 2:3 с. 1:1 d. 4:1 e. 1:5