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(D) In Mendel's dihybrid cross,the parents were pure-breeding plants with yellow-round seeds $(YYRR)$ and green-wrinkled seeds $(yyrr)$.When these par

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Yellow and round

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(D) In Mendel's dihybrid cross,the parents were pure-breeding plants with yellow-round seeds $(YYRR)$ and green-wrinkled seeds $(yyrr)$.When these parents were crossed,the $F_1$ generation produced plants that were heterozygous for both traits $(YyRr)$.These $F_1$ plants exhibited the dominant phenotype,which is yellow and round seeds.Therefore,the $F_1$ generation that was self-pollinated had a phenotype of yellow and round seeds.

In Mendel's dihybrid cross experiment,what was the phenotype of the $F_1$ generation that was self-pollinated?

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