In tomatoes, yellow flowers (Wf) are dominant over white flowers (wf), and yellow fruit (r) are...

In tomatoes, yellow flowers (Wf) are dominant over white flowers (wf), and yellow fruit (r) are recessive to red fruit (R). A cross was made between true-breeding plants with yellow flowers and yellow fruit, and plants with white flowers and red fruit. The F1 generation plants were then crossed to plants with white flowers and yellow fruit. The following results were obtained:

75 white flowers, red fruit

205 white flowers, yellow fruit

216 yellow flowers, red fruit

37 yellow flowers, yellow fruit

a. What is the genotype of the F1 plant? Please write your answer is such a way that you show which alleles are present on each homologous chromosome. (3 points)

b. How many plants with yellow flowers and yellow fruit should we have expect to observe from these results? (3 points)

c. In testing to determine if these two traits are linked, what is the chi-square statistic associated with the test of independence? (3 points)

d. What are the degrees of freedom and probability associated with this statistic? Are these two traits linked? (3 points)

e. What is the distance in terms of map units between the two genes that control these traits? (3 points)

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Expert Solution

gladiator answered 1 year ago

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