How does taxonomy us understand relationships among organisms on earth? what kinds of evidence do scientists use in taxonomy?

How does taxonomy us understand relationships among organisms on earth? what kinds of evidence do scientists use in taxonomy?


Let me explain to you: Taxonomy helps us understand relationships amongst organisms on Earth by grouping similar organisms together and creating links between all living things on Earth. For example, in order to get evidence they can use DNA structure, if a higher percentage of their DNA is shared then they are more closely related

Physical, as well as genetic evidence, are used by the scientists to classify organisms.

Physical evidence may involve structure comparison such as fossils, homologous and analogous structures, vestigial organs et cetera.

Genetic evidence includes the comparison of genetic material, that is, the similarity in the DNA sequence.

Taxonomy helps us to understand that how close one organism is from another. For example, the vertebrates are more closely related to each other as compared to the invertebrates. In addition, it also supports the idea of common ancestry.

The "Big Bang" theory is the best known explanation for the constant cosmic background radiation.

Real scientists don't use evidence to support their theories.

Real scientists propose theories to explain the observed evidence.  After that, they try every way they can think of to prove that the theory is False.

The main pieces of evidence that scientists use to classify organisms are essentially form and evolutionary relationships.


There are different pieces of evidence to show the phylogenetic relationship between the different animals. Human and chimpanzee DNA are showing many similarities. It is about 95% to 98%.  

The number of nucleotides present in humans and chimps is similar to having some difference.

The other evidence is their intelligence is more like a human. They learn much social behavior from their community. Their social behavior also changes with time like men.

But with this similarity, humans and chimpanzees are different in many things such as - humans have a big brain than chimps. Their skeletal structure also differs.

There is constant cosmic background radiation.


The detection of constant cosmic background radiation provided an evidence for the Big Bang theory. The cosmic microwave background radiation is considered as remnant radiation of the early stages of the universe. The cosmic microwave background radiation was detected in all the directions. The average temperature of the background radiation is 3 K.

Fossils and other archeological discoveries
Fossils of the ancestors are basically used to classify the organisms. On the basis of that they identify the age and character of that organism so that they can relate to the exact organism.
I think 1 is C.  I think 2 is D.  I think 3 is FALSE.  I really am not sure.  Sad because we just learned this.
Scientist look at the homologous structures and the genetic similarities between the different organisms in taxonomy

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