Dominance is not an autonomous feature or the product that it has information for.
Explanation:
Autonomous = Independent
Lets say the above phrase is like “ DOMINANCE IS AUTONOMOUS”
Then the dominant gene will always express the phenotype no matter whether it is in homozygous or in heterozygous condition. For eg. TT (homozygous) will produce Tall and Tt (heterozygous) will also produce Tall. So the expression is independent in this case or autonomous.