The statement provided correctly describes the scenario of one allele being dominant and the other recessive. Here's a step-by-step explanation to support this:
1. In the given scenario, both parents have concentrated pigments, but some of their offspring have dilute pigments. This indicates that the parents are carriers of the dilute trait, meaning they carry the recessive allele for dilute pigments without expressing it themselves.
2. Since the parents have concentrated pigments (the dominant trait), it implies that the allele for concentrated pigments is dominant over the allele for dilute pigments.
3. The fact that some offspring exhibit dilute pigments suggests that they inherited two copies of the recessive allele (one from each parent) which results in the expression of the dilute trait.
4. Therefore, based on the information provided, the allele for concentrated pigments is dominant, and the allele for dilute pigments is recessive in this genetic scenario.
In conclusion, the given statement accurately describes the dominance relationship between the allele for concentrated pigments and the allele for dilute pigments based on the observed phenotypes in the parents and their offspring.