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Question
Long answer type question.
Define test cross and explain its significance.
Solution
Definition:
The cross between F1 hybrid and its homozygous recessive parent is called a test cross.
Significance of test cross:
- It helps to determine whether individuals exhibiting dominant character are genotypically homozygous or heterozygous.
- It has wide application in plant breeding experiments.
- In rapid crop improvement programmes, test cross is used to introduce a useful recessive trait in the hybrids.
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Test cross is back cross but back cross is not necessarily a test cross.
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