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Question

A cross done between a homozygous recessive and a heterozygous plant is called as

A
Monohybrid cross
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B
Dihybrid cross
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C
Test cross
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D
Back cross
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Solution

The correct option is C Test cross
A cross between a homozygous plant with recessive traits and a heterozygous plant is known as a test cross. A test cross is a valuable tool in predicting the genotype of the organism in question. The test cross was introduced by Gregor Mendel and his goal was to discover if the genotype in a homozygous dominant (AA) or heterozygous (Aa) plant. Since both genotypes produce the dominant phenotype characteristics, it becomes impossible to identify. The test cross is a simple method of discovering the true breeds.

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