The coats of Labrador retrievers are black, chocolate, or yellow in colour. Two genes control coat colour in these dogs. Their genotypes and phenotypes are shown below. Genotype Phenotype D_B_ Black D_bb Chocolate dd__ Yellow A black dog heterozygous for both genes, and a yellow labrador (ddBb) are crossed. Determine the phenotypic ratio of the litter produced. Enter the numbers in order of top to bottom. Black Chocolate Yellow

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