What can you conclude from these results about fructose-fed mice versus those without fructose?

Fructose-fed mice will have increased chances of obesity, diabetes, and nonalcoholic fatty liver disease. While those without fructose-fed will have normal body metabolism.

Eventually, every cell in the body uses glucose for energy. In contrast, only liver cells break down fructose. One of the end products is triglyceride, a form of fat. Uric acid and free radicals are also formed.

Fructose-fed mice will have enhanced possibilities for obesity (fats), diabetes, and nonalcoholic fatty liver disease. On the other hand, those without fructose-fed will have regular body metabolism.  Ultimately, every cell in the body utilizes glucose for the purpose of strength and energy.

In contradiction just liver cells split down fructose. One of the end products is triglyceride which is a form of fat. Uric acid and free radicals are also formed. Triglycerides can be added to in liver cells and damaged liver function. Uric acid can prevent generation of nitric oxide which is a material that aids to defend artery walls from destruction.

The other disadvantage of high fructose consumption is insulin resistance which is a condition that drives to diabetes.

you know they are heterozygous for a trait because they have it as jj or jj.