Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The part of the radish we eat may be oval or long, with long being the dominant characteristic.
If true-breeding red long radishes are crossed with true-breeding white oval radishes, the F1 will be expected to be which of the following?
A) red and longB) red and oval
C) white and long
D) purple and long
E) purple and oval
Answer: D
In the F2 generation of the above cross, which of the following phenotypic ratios would be expected?
A) 9:3:3:1B) 9:4:3
C) 1:1:1:1
D) 1:1:1:1:1:1
E) 6:3:3:2:1:1
Answer: E
The flower color trait in radishes is an example of which of the following? A) a multiple allelic system
B) sex linkageC) codominance
D) incomplete dominance
E) epistasis
Answer: D
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