1) The observed numbers for dominant and recessive types in an F2 generation are

Question

1) The observed numbers for dominant and recessive types in an F2 generation are 154 and 46. You would assume the expected numbers to be in a ---------- to 1 ratio.

would the answer for question 1 be a 3 to 1 ratio i'm really confused.

2) Looking at the observed numbers in question 1 what would your expected number of dominant types be?

I don't know please help.

3) Using the same observed numbers in question 1 what would the expected number of recessive types be?

4) Using the observed numbers from question 1 what would the expected number of individuals with a dominant phenotype and a heterozygous genotype? Remember the expected genotypic ratio is 1 (AA): 2 (Aa): 1 (aa).

Please answer all the questions and if you can explain this is due today thank you so much for your help I really appreciate it .

Explanation / Answer

1. Phenotypic ratio expected is 3 (dominant): 1 (recessive)

2. Total number of progeny is 154 + 46 = 200

3 . Number of recessive 1 × 50 = 50

4. Total number of Dominant phenotype = 156

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