Answer:
F1
A A
a Aa Aa
a Aa Aa
All the offspring have flower located at axial position
F2
A a
A AA Aa
a Aa aa
Three offspring with genotype i,e Aa, Aa and Aa will have flower located at axial position
Only offspring with genotype "aa" will have flower located at terminal position
Explanation:
Let the allele "A" represent the characteristics of axial position of flower
Let the allele "a" represent the characteristics of terminal position of flower
Given -
"A" is dominant over "a"
F1 generation -
Two parents with homozygous genotype for both A and a are crossed . The punnet square for the cross between "AA" and "aa" is as follows -
A A
a Aa Aa
a Aa Aa
Thus the genotype of offspring is "Aa"
Since, "A" is dominant over "a", all the offspring have flower located at axial position
F2 generation-
The cross between two parents having heterozygous genotype "Aa" will take place .
The punnet square for the cross between "Aa" and "Aa" is as follows -
A a
A AA Aa
a Aa aa
Three offspring with genotype i,e Aa, Aa and Aa will have flower located at axial position
Only offspring with genotype "aa" will have flower located at terminal position
