Final answer:
In a hypothetical species where one allele always produces blue pigment and another turns on and off leading to green color, the continuously active allele is dominant. Consequently, individuals with both alleles would have a blue phenotype.
Step-by-step explanation:
The question involves understanding the genetics of eye color in a hypothetical species and predicting the outcomes of different allele combinations of a gene called EyeC. The allele P for EyeC is described as always active, leading to the production of a blue pigment. On the other hand, allele Q can be turned on or off by signal molecules, resulting in a combination of blue and yellow pigments, which produces green eye color.
When considering the dominance relationship between these alleles, P would likely be dominant over Q because its effect (producing the blue pigment) is always expressed, even without the signal molecule. Therefore, in a PQ individual, where both alleles are present, the phenotype would display the consequence of the dominant P allele, which is the blue pigment. Hence, the correct prediction for the phenotype of PQ individuals would be blue, since the P allele’s continuous activation overrides the Q allele’s variable response to signaling.