Question

You've discovered a new plant species in which green fruit color (g) is recessive to yellow fruit color (G), and long fruit shape (l) is recessive to round fruit shape (L). The genes for fruit color and shape are located on the same chromosome and are 12 m.u. apart.

Determine the proportions of progeny of each phenotype produced for this cross. GlgL x GLg View Available Hint(s) ResetHelp 0

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Answer #1

The genetic distance between two genes is 12 m.u.

This suggests that the recombination percentage between two gene is 12%. That's why the recombinant gametes are 12% and the parental gametes are 100-12=88%

Parents: Gl/gL × GL/gl

Please look in the image for cross:

Parents gel al X 9L/ge llow lesund 44%. b6% M Punnet square . 6% gametes| GLA4% ge 44% | ge6% Iglo Ge Iggle ag le logee Gore

Green Long = 2.64 043% Green Round = 19.36X1) + (2-64x12 + (0-36 XI) = 22.64 ou 22%

Yellow round: 53%

Yellow long: 22%

Green round: 3%

Green long: 22%

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