Which genetic mechanism best explains the results of this cross?

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

answer increasing the intensity, duration,and frequency of exercise progressively;