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Question

Assertion :In dihybrid cross, the two pairs of factors are located in two pairs of homologous chromosomes. Reason: Each homologous pair of chromosome bears two pairs of factors.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
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C
Assertion is correct but Reason is incorrect.
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D
Both Assertion and Reason are incorrect.
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Solution

The correct option is C Assertion is correct but Reason is incorrect.
In a dihybrid cross, two different characters are crossed together. For example, A cross between round yellow seeds with green wrinkled seeds. Here two characters both texture and colour are involved. Such a cross is called a dihybrid cross. These two characters are located on different homologous chromosomes. But a single chromosome does not bear two factors, they are located on two different chromosomes. So, the correct answer is option C.

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