Create a punnet square for both problems the 2. with pods yellow is going to be yy while the green pod which would be Gg and you would put that on the side.
1. is with guinea pigs so the top of your square is going to be BB on the side and BB on the top. Genotype is what you are putting the the different squares and the phenotype is the physical trait like black hair or a green pod.
The heart has an intrinsic conduction system that causes electrical activity in the heart muscles causing them to contract. The intrinsic conduction system is made up specialized cells, that contain nerve and muscular characteristics.
The muscle cells in the heart are linked together by gap junctions, allowing cardiac action potentials to travel from one muscle cell to another.
Atrioventricular (AV) node. The damage to the AV node causes the electrical signals traveling from the upper chambers to the lower chambers to be impaired causing an AV block.