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  4. What is the main purpose of a test cross?

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Q. What is the main purpose of a test cross?

NTA AbhyasNTA Abhyas 2022

Solution:

Test crosses are used to test an individual's genotype by crossing it with an individual of a known genotype. Individuals that show the recessive phenotype are known to have a homozygous recessive genotype. Individuals that show the dominant phenotype, however, may either be homozygous dominant or heterozygous.