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Standard XII
Biology
Question
What is a test cross?
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Solution
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When
F
1
generation is crossed with a parent with recessive traits, it is called a test cross.
It helps determine the genetic composition (heterozygous/homozygous) of the progeny.
In the given cross the
F
1
is heterozygous and so the ratio is 1:1
If it were homozygous all the progeny will be of the same phenotype.
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