It is the spinal cord that does it.
If it’s 75% solid then it must be 25% striped because there are only two options and it must add up to 100%.
Let me know if you have any questions
The Alberts and Kaibab squirrels differed from their respected paths by
geologic isolation. The two species of squirrels were separated and then
eventually adapted to their respected environments.
I'd say that your traits can come form your parents. if you mean physically
