Answer:
A. Genetics
Explanation:
Because the mice are all from the same litter, their appearance is influenced by genetics.
I would expect to wait like a week or so, and then go for a test or order one online.
Genetics may cause a difference in health tendencies
Long bones can be found in the arms which would be the ulna and the radius and they would also be found in the legs which is the femur, tibia, fibula
What their motions are and how the brain works in a baby
