The northern elephant seal was almost hunted to extinction in the 1800s. by the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. what will be the consequence of this reduction?

The consequence of this event will be decreased genetic variability or more precisely loss of genetic variation due to genetic drift.

There is a process called bottleneck effect, which explains the reduction in gene pool due to decrease in population number. The northern elephant seal is an example of that. When the population number is drastically reduced, the formed smaller population (with a smaller genetic diversity), remains to pass on genes to offspring.

The genetic drift (evolutionary mechanism that affects the allele frequency) caused by a population bottleneck can change the distribution of alleles and even lead to loss of alleles.

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.