Question:medium
In a Mendelian dihybrid cross, out of 400 \(F_2\) generation plants, how many will be homozygous for at least one gene?
In a Mendelian dihybrid cross, out of 400 \(F_2\) generation plants, how many will be homozygous for at least one gene?
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In a dihybrid cross, only the double heterozygote \(AaBb\) (4 out of 16, or 1/4) is heterozygous for both genes.
All other 12 genotypes (12 out of 16, or 3/4) are homozygous for at least one gene.
\(400 \times 12/16 = 300\).
All other 12 genotypes (12 out of 16, or 3/4) are homozygous for at least one gene.
\(400 \times 12/16 = 300\).
Updated On: Aug 3, 2026
- 100
- 200
- 300
- 400
Show Solution
The Correct Option is C
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