Answer:
in the wall of the right atrium of the heart.
Explanation:
The sinoatrial node (SA), consisting of spindle-shaped cells, initiates the electrical activity of the heart. From its location in the right atrium in proximity to the superior vena cava, the electrical activity spreads to the atria, whose cells are larger than those of the SA.
Reticulocytes, or immature erythrocytes.
Answer:
B
Explanation:
They can no longer return to their natural habitat and that leads to changes in all aspects, rendering all other answers insufficient.
Answer:
Insertion and Deletion
Explanation:
Inserting a new base will compeltely change every other set of 3 bases same as deleting.