Final answer:
The specific phenotypic ratios of the progeny cannot be determined without more information about the alleles and their effects.
Step-by-step explanation:
In a cross between two heterozygous mice, one of the mice has an imprint on her dominant allele. The imprint does not affect the genotype, but it may affect the phenotype. The phenotypic ratios of the progeny will depend on the specific alleles involved and how they interact. Without more information about the alleles and their effects, it is not possible to determine the exact phenotypic ratios.