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Consider two genes in dogs. Gene A codes for ear color, and gene B codes for tail length. Dark are dominant to

light ears, and short is dominant to long tail. A dog homozygous for dark ears and short tail is crossed to a dog with light ears and a long tail, and their offspring were then crossed. 

1. What are the genotypes of the parental generation?

2. What is the genotype and phenotype of the F1 generation?

3. What are the genotypes and phenotypes (and their proportions) of the F2 progeny that results from the F1 cross?

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