Which of the following is TRUE about this family of dogs.

The correct answer is:

All of the above.

• A gene is the basic physical and functional unit of heredity.
• A trait, as related to genetics, is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative (such as eye color) or quantitative (such as height or blood pressure).
• Inherited traits are coded in our DNA and hence can be passed on to the next generation. Example: eye color, height, complexion, hair color etc. The variations that emerge as a result of reproduction may be inherited which causes an increase in the survival rate of entities.
• Here we can see that the colors of all the dogs are same and they all look similar so we can say, they inherit their genes from their parents and their genes affect their traits.
• So option 4 - All the above is correct.