The circulation of blood refers to its continual flow from the heart, through branching arteries, to reach and traverse the microscopic vessels in all parts of the body, reconverging in the veins and returning to the heart, to flow thence through the lungs and back to the heart to start the circuit.
Answer:
Just replace Adenine with Uracil base
Explanation:
A complementary Rna strand must have Uracil base
It can cause a bacterial disease in the blood stream