D. When a population of organisms contains a wide range of genetic traits.
The technique is <span>gel electrophoresis</span>
The answer is colony-stimulating factor(CSF)
Erythropoietin (EPO) is a hormone made by kidney that will induce the growth of red blood cells. Testosterone and estrogen is sexual hormone that has wide effect, but shouldn't affect the white blood cells. Colony-stimulating factor will stimulate the hemopoietic stem cells growth that will end up as white blood cells.
Day 4-5 thats just what it told me once i answered the question