Homework Answers
Ans- F1 Individuals are crossed as follows:
BbVGvg X BbVGvg
F2 progeny-
9 - Wild type body colour with normal wings - 56 individual
3- Dark body colour with normal wings- 19 individual
3- wild type body colour with vestigial wings- 19 individual
1- Dark body colour with vestigial wings- 6 individual
If the progeny results in this ratio then the genes are assorting independently.
Futher to test the hypothesis we study a progeny of 100 flies in F2 generation with the cross shown above and then calculate the frequency of recombination among them.
If we get no.of individuals as listed above and when we calculate recombination frequency based on this data we'll get more than 50% recombinant ion, this clearly shows that genes are assorting independently and are not linked.
Recombination frequencies between 1-50% signifies that the two genes under consideration are 1-50CM apart and are linked or present on the same chromosome.
If recombination frequency are more than 50% then genes are not linked and are segregating independently.
If we will get more than 50% recombinants then the genes are assorting independently
and the resulting progeny has the population in the ratio of
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