In dogs, wire hair (S) is dominant to smooth (s). In a cross of a homozygous wire-haired dog with a smooth-haired dog, what will be the phenotype of the F1 generation?

All wire-haired

Explanation:

You're crossing the genotype SS with the genotype ss, so you get four boxes with the genotype Ss. This represents 4 wire-haired dogs since wire hair is dominant to the smooth. The recessive allele is not expressed; this is also known as complete dominance. The 'S' allele produced enough proteins for the trait to be expressed in phenotypic form.

gag reflex, poor dentition, gum retraction

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