Some white-flowered pea varieties are characterized by indentation on the seeds. The D1 gene determines the round shape of the seeds, and its recessive allele dl determines the indentation. The action of the recessive allele dl can be suppressed by the dominant allele of the R gene. The recessive allele of the epistatic gene r does not affect the seed shape. ‘ What offspring can be expected from crossing a diheterozygous plant with a plant heterozygous for the first and homozygous for the second dominant gene?
The offspring from crossing a diheterozygous plant with a plant heterozygous for the first and homozygous for the second dominant gene will have rounded fruits.
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