All the genes in a particular living organism are called its: 1. genetics
2. variation
3. heredity
4. genotype

.1.a large molecule which contains all the genetic information of an organism  

1

DNA molecule1

2.all of the traits genetically inherited by an organism  

3

mutation3

3.a change in a gene  

4

ribose4

4.a kind of sugar present in all plant and animal cells

1. DNA MOLECULE

2heredity

3mutation

4.ribose

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.