Question

1.In a certain plant, flowers can be either white, red or blue. The following crosses were...

1.In a certain plant, flowers can be either white, red or blue. The following crosses were performed with different flower colour varieties:

Cross 1:

P: red x red

F1: all red

F2: all red

Cross 2:

P:blue x red

F1:148 blue, 149 red, 103 white

Cross 3:

P: blue x white

F1: all blue

F2: 221 blue, 79 red, 100 white

a.Based on the crosses, how many genes control flower colour? Include a chi-square test to support your answer for the F2s in the third cross.

b.What are the genotypes that control flower colour?

c.What are the genotypes for each of the plants in the crosses?

d.Draw a pathway that explains the results.

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Answer #1

(a). Based on the crosses, two genes control the flower color.

(b). Find the below crosses for flower genotypes and crosses.


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