The allele for orange eyes (o) is dominant and the allele for green eyes is recessive
(o). a dragon that is heterozygous (oo) will have what phenotype?

Option B) Orange eye

Explanation:A dominant allele will produce a dominant phenotype by suppressing other allele of the same character. Which means if there is two dominant allele i.e (OO) the dragon will have orange eyes and if the the dragon have a dominant and a recessive allele i.e (Oo) then also the dragon will have orange eye as (O) is dominant over (o).And a recessive allele will produce a recessive phenotype i.e the character of recessive allele will not be expressed. To express its trait the individual must have two copies of that allele i.e (oo).

Result: The dragon will have orange eye.