Two parents present to you, a genetic counsellor. The mother has recently been diagnosed with retinoblastoma, an autosom

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Two parents present to you, a genetic counsellor. The mother hasrecently been diagnosed with retinoblastoma, an autosomal dominantdisorder that affects vision. She subsequently underwent genetictesting and was deemed heterozygous for the Rb gene. The father hasa “normal” phenotype (i.e., he does not have retinoblastoma).Predict all possible phenotypic and genotypic ratios.