A dog breeder crosses two dogs that are heterozygous for brown coats Some of the puppies have brown coats, and some have black coats.
Assuming that coat color is controlled by a single gene, which of the
following statements is most likely true?
The allele for brown coat has mutated into an allele for black coats.
The allele for brown coat is dominant to the allele for black coat.
The alleles for brown and black coats are on different chromosomes.
The allele for brown coat is recessive to the allele for black coat.
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