Multiple choice

Pure homozygous offsprings in a dihybrid cross in the F2 generation will be

  1. 1/2

  2. 1/4

  3. 1/8

  4. 1/16
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B Correct answer
Explanation

In a standard Mendelian dihybrid cross, the F2 generation produces 16 possible genotype combinations in a 9:3:3:1 phenotypic ratio. Among these, the pure homozygous offsprings (both traits pure dominant or pure recessive, like YYRR, yyrr, YYrr, yyRR) total 4 out of 16, which simplifies to 1/4.

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