Zebra and horses are not considered the same species. Which of the following explains why? A. Zebra fur color is striped while the horses are not B. Zebra and horses cannot breed and have fertile babies C. Zebras and horses live in two completely different ecosystems D. Zebra and horses have very similar DNA sequences

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

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

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