Which of the following is not a cause of cell necrosis? a. infection b. blood clot c. injury d. perfusion

The right answer is d. Perfusion.

Explanation:

Perfusion is a process  in which cells are oxigenated during its transport trough circulatory or linfatic system. Usually this process is necesary for good condition of tissues and so, it does not involves necrosis.

In the case of infection, blood clot and injury, there are cell necrosis, given by the activity of microorganisms, phisyology or by meachanic lession

the genotypes would be 50% bb and 50% bb

the phenotypes would be 50% brown and 50% white. hope this : )

answer; polycythemia is the correct answer;