In Mendel's experiments with garden pea,round | vedclass

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(D) When a dihybrid cross is performed between plants with round yellow seeds $(RRYY)$ and wrinkled green seeds $(rryy)$,the $F_{1}$-generation produc

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Round yellow,round green,wrinkled yellow,and wrinkled green seeds

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(D) When a dihybrid cross is performed between plants with round yellow seeds $(RRYY)$ and wrinkled green seeds $(rryy)$,the $F_{1}$-generation produces all heterozygous plants with round yellow seeds $(RrYy)$.When these $F_{1}$ plants are self-pollinated to obtain the $F_{2}$-generation,the law of independent assortment applies.The phenotypic ratio obtained in the $F_{2}$-generation is $9:3:3:1$.This results in four types of phenotypes: round yellow,round green,wrinkled yellow,and wrinkled green seeds.

In Mendel's experiments with garden pea,round seed shape $(RR)$ was dominant over wrinkled seeds $(rr),$ and yellow cotyledon $(YY)$ was dominant over green cotyledon $(yy).$ What are the expected phenotypes in the $F_{2}$-generation of the cross $RRYY \times rryy$?

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