In cucumbers, speckled fruit color (u') is dominant to uniform fruit color(u), and large spines (ss") are dominant to small spines (ss). These twogenes are linked at a map distance of 20.4 m.u.A true-breeding cucumber plant with speckled fruit and large spines iscrossed with a true-breeding plant with uniform fruit color and smallspines.One of the F1 plants is crossed with a plant with uniform fruit color andsmall spines. What percentage of the offspring of this cross are expectedto have uniform fruit color and small spines?39.8%10.2%79.6%20.4%

Name: In cucumbers, speckled fruit color (u') is dominant to uniform fruit
Uploaded: 2024-03-20T06:43:04.000Z
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Description: In cucumbers, speckled fruit color (u') is dominant to uniform fruit color(u), and large spines (ss") are dominant to small spines (ss). These twogenes are linked at a map distance of 20.4 m.u.A true-breeding cucumber plant with speckled fruit and l

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Human Anatomy & Physiology (11th Edition)

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In cucumbers, speckled fruit color (u') is dominant to uniform fruit color
(u), and large spines (ss") are dominant to small spines (ss). These two
genes are linked at a map distance of 20.4 m.u.
A true-breeding cucumber plant with speckled fruit and large spines is
crossed with a true-breeding plant with uniform fruit color and small
spines.
One of the F1 plants is crossed with a plant with uniform fruit color and
small spines. What percentage of the offspring of this cross are expected
to have uniform fruit color and small spines?
39.8%
10.2%
79.6%
20.4%

Expert Solution

Step 1

Given

Speckled fruit colour U⁺ is dominant to uniform fruit colour u

Large spines SS⁺ is dominant to small spines ss.

A true breeding Speckled fruit colour and Large spines are crossed with uniform fruit colour and small spines

And there F1 product is crossed again with uniform fruit colour and small spines

The distance between these two gene are 20.4 m.u.

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