Answer:
Specie is a group of organisms that can interbreed with one another and produce fertile offspring.
Step-by-step explanation:
Species Concept that applies to this situation is that a specie is a group of organisms that can interbreed with one another and produce fertile offspring. According to the example of mice, we can conclude that species having different appearance if belongs to the same group so it can interbreed with one another and produce offspring which is fertile and continue its generation.