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  4. In Mendelian dihybrid cross when heterozygous Round Yellow are self crossed. Round Green offsprings are represented by the genotype:

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Q. In Mendelian dihybrid cross when heterozygous Round Yellow are self crossed. Round Green offsprings are represented by the genotype:

KEAMKEAM 2011Principles of Inheritance and Variation

Solution:

A typical Mendelian dihybrid cross between yellow round (dominant) and green wrinkled (recessive plants) can be represented as follows :
image
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Thus, round green (green round) offsprings are represented by genotypes $yyRR$ and $yyRr$ (or $RRyy$ and $Rryy$).