7. Why is it so unlikely for a girl to get a disorder like Duchenne Muscular Dystrophy

Because it takes a very long time and an interesting mindset.

Explanation:

People don't really have an explanation for the things that we do they just suddenly build up inside us

This is because the mutated gene responsible for Duchenne is located in the X chromosome. Girls have two X chromosomes, meaning that the body usually inactivates the chromosome that carries the mutation. The female will carry the mutation, but manifest little to no symptoms of the disease.

Explanation:

I hope that this helped you ;)

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.