You can tell how closely related organisms are by determining the lowest classification that they share. For example, organisms that share the same genus will be more closely related than organisms that share the same family.
They are closely related.
Evolutionary relationships are traced in the classification of organisms. For classification of organisms, we look for similarities among organisms which allows us to group them. The more characteristics two species will have in common, the more closely they are related. It indicates that more closely two species are related, the more recently they would have had a common ancestor. Thus, classification of species is in fact a reflection of their evolutionary relationship.
Evolutionary relationships are traced in the classification of organisms. For classification of organisms, we look for similarities among organisms which allows us to group them. The more characteristics two species will have in common, the more closely they are related. It indicates that more closely two species are related, the more recently they would have had a common ancestor. Thus, classification of species is in fact a reflection of their evolutionary relationship.
Organisms within the same family are more closely related than those within the same order. Family is a higher classification level than order, so organisms within the same family share more recent common ancestry.
Domain The varieties and strains are more closely related in classification of a taxon.
Scientists mainly compare similarities and differences in what the organisms look like. With the less obvious relations, they analyze their DNA. The goal is to find a common ancestor between the two organisms. The more recently that ancestor existed, the more closely related the organisms are.
Organisms that are closely related to rabbits include; horses and turtles
The more classification levels two organisms share, the more closely related they are in terms of evolutionary history. Organisms that share many classification levels are likely to be more similar in terms of genetics, anatomy, and behavior.
On basis of cladistic analysis higher organisms are more closly related to Archaea .
A group of similar organisms that can produce fertile offspring are species.
As you go down the levels of classification (from kingdom to species), the level of classification becomes more specific and increases. This means that organisms within the same species are more closely related to each other than organisms within the same kingdom.