Consider a scientist wanting to know the effect of water on the road on the distance it takes to stop a car. What would be a hypothesis for this study? How would the scientist ensure that the results of the study were accurate? What kinds of generalizations could they
make?

i think it is dna, i'm not totally sure but i think it might be.

if you know your abc's you should be able to get your answer or just use google

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.