Biology Pretest: evolution

As a small change in a person's dna can cause a genetic disorder

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.