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Question
In cases of complete linkage, the F2 ratio of a dihybrid cross is:
Options
\[9:3:3:1\]
\[1:2:1\]
\[3:1\]
\[1:1:1:1\]
MCQ
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Solution
When genes show complete linkage, they move as a single unit and are inherited together, giving a dihybrid F2 ratio of \[3:1\]. The classic \[9:3:3:1\] ratio appears only when genes assort independently on different chromosomes.
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