Essay
In wheat,a cross between red-kernel and white-kernel strains yielded F1 offspring with red kernels.When the F1 were intercrossed,the F2 plants had a ratio of 15 red-kernel : 1 white-kernel.A testcross of the red-kernel plants yielded 3 red-kernel : 1 white-kernel.
a)What are the parental genotypes?
b)What are the F2 genotypes and phenotypes?
c)What conclusions can be made about the allelic and gene interactions?
Correct Answer:
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a)A/A;B/B (red) 
(white)
b)
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Correct Answer:
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(white)b)
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