The answer is a i think not sure though
The cells of SA node acts as the heart's peacemaker which establishes the pace for cardiac activity.
Sinoatrial node is also called sinus node.
SA node is termed as a group of cells which are located in the wall of the right atrium of the heart. Cells have the ability to produce electrical impulse. It travels to the heart via electrical conduction system which causes it to contract.
It produces action potential and also sets the rhythm of the heart.
Answer:
This is Law of Dominance.
Explanation:
- On crossing pure bred pea plants having one trait of a character with pure bred plants having a different trait of the same character , Mendel noticed that all the plants in the first filial generation were having only one trait though they received the factor for other trait.
- However, when he allowed these plants of first filial generation to pollinate themselves, the other trait also appeared in some plants of second filial generation.
- And thus the law of dominance was framed, which stated that, characters are controlled by discrete units called factors, these factors occur in pair and in a dissimilar pair of character one factor dominates and the other fails to appear.
