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Hello student.
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In this question, we will be talking about crosses between summer squash.
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Now, in the question, it is said that the white color gene, the white color gene or allel, that means capital w, is dominant over the yellow color.
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So this is the yellow color, all this is the small w.
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And it is also said that the disk shape is the capital d which is dominant over the sphere shaped, sphere shaped, which is the small d.
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Now we have to make a cross between the pure breeding for white and pure breeding for disc shape.
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So it will be capital w capital w and capital d capital d and the cross will be done for the pure breeding yellow and sphere shape.
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So this is small w small w and small d small d.
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So this will indicate the white, this is the disc and this is the yellow and this is the fierce shape.
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So this is the parental generation or the p generation.
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Now from this we will get w and capital d gamut and from here we will get small d and small d gametes.
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So these are the gametes.
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And in the f1 progeny we will be getting capital w small w capital d small d.
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So this is the f1 progeny...