3. What are the degrees of freedom for this test? Write your answer here: Use the table below to calculate your x' value. Expected Observed (e) (0) (o-e) Phenotype oe (oef e Total :

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Do number 3 please
In Primula vulgaris (primrose), purple flowers are dominant to white flowers, and short plants
are dominant to tall plants. The genes controlling these two traits are on different
chromosomes. You cross a true-breeding purple, short plant with a true-breeding white, tall
plant and then intercross the resulting F1 offspring. In the F2 offspring, you find the following
phenotypes:
608
Purple, short
161 Purple, tall
White, short
White, tall
173
58
With your knowledge of the x' test, you will determine whether the outcomes of the F.
intercross corresponds to expectations based on Mendelian genetics.
1. What is your null hypothesis for the outcome of the F, intercross? Write it here:
2. Based on your null hypothesis, how many individuals do you expect in each of the phenotypic
classes? Write your expectations below.
Purple, short
Purple, tall
White, short
White, tall
3. What are the degrees of freedom for this test? Write your answer here:
Use the table below to calculate your x² value.
Expected
Observed
(o-e)
Phenotype
(o-e)
o-e
(e)
(0)
Total :
Transcribed Image Text:In Primula vulgaris (primrose), purple flowers are dominant to white flowers, and short plants are dominant to tall plants. The genes controlling these two traits are on different chromosomes. You cross a true-breeding purple, short plant with a true-breeding white, tall plant and then intercross the resulting F1 offspring. In the F2 offspring, you find the following phenotypes: 608 Purple, short 161 Purple, tall White, short White, tall 173 58 With your knowledge of the x' test, you will determine whether the outcomes of the F. intercross corresponds to expectations based on Mendelian genetics. 1. What is your null hypothesis for the outcome of the F, intercross? Write it here: 2. Based on your null hypothesis, how many individuals do you expect in each of the phenotypic classes? Write your expectations below. Purple, short Purple, tall White, short White, tall 3. What are the degrees of freedom for this test? Write your answer here: Use the table below to calculate your x² value. Expected Observed (o-e) Phenotype (o-e) o-e (e) (0) Total :
Expert Solution
Step 1

Purple flower (PP) =dominant

White flower (pp)= recessive

Sort plants (SS) = dominant

Tall plants (ss) = recessive

3. 

The formula of Degree of freedom is df = N-1    N=  the number of classes 

N=4 

df= 4-1 = 3 Degree of freedom

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