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Question
Explain the statement of
Test cross is back cross but back cross is not necessarily a test cross.
Solution
- In the back cross, F1 generation can be crossed with either dominant or recessive parent.
- But in test cross, F1 generation is crossed with a recessive parent only.
- Thus, in the back cross, if F1 generation is crossed with a recessive parent it will be a test cross, but if F1 generation is crossed with a dominant parent it will not be a test cross. Therefore, the test cross is a back cross but the back cross is not necessarily a test cross.
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