Scientist compared DNA from living organisms to identify what

Scientist compared DNA from living organisms to identify heredity or genetic information

Explanation:

DNA or deoxyribonucleic acid is a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information. Scientists analyze DNA to discover how closely organisms are related to each other. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. The more similar the DNA, the more closely related the organisms.

The right answer is to identify whether they are closely related or not.

In order to be able to compare two DNAs (nuclear or mitochondrial), one must first extract them from a bone or biological tissue, make the DNA fingerprint of each DNA, then amplify this fingerprint to make the DNA " visible, "and finally carry out a fingerprint comparison by electrophoresis or after sequencing the DNA. These steps are substantially the same for the comparison of mitochondrial DNA or nuclear DNA. Only amplified DNA sites are different, and often sequencing is preferred in the mitochondrial DNA comparison.