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in dogs, erect ears (E) is dominant over droopy ears (e). what are the results if two heterozygous dogs have a litter of puppies?

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cclark354914
Genotypically, you get a 1:3:3:1 ratio of homozygous dominant, heterozygous, and homozygous recessive. 
Phenotypically, you get a 3:1 dominant: recessive ratio.

If you solve by doing a punnet square, you can see these ratios.

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