Classification

What does a cladistic analysis show about organisms?

The domain that contains unicellular organisms that live in extreme environments is

The three-domain system arose when scientists found that Eubacteria and Archaebacteria were

At any level of organization, groups that have biological meaning are referred to as

The second part of a scientific name is unique to each

In biology, a trait that arose in an ancestor and is passed along to its descendants is called

What is true about dissimilar organisms such as a cow and a yeast?

The three-domain system recognizes fundamental differences between two groups of

One reason common names are not useful to biologists is that they

The domain that corresponds to the kingdom Eubacteria is

Traditional classifications tended to take into account primarily

What cell structures in eukaryotic cells contain DNA used to see evolutionary relationships?

Similar DNA sequences in genes can be evidence of

The grouping of organisms based on their common descent is called

Animals that are warm-blooded, have body hair, and produce milk for their young are in class

Scientists want to assign every organism a universally accepted name according to the system

Which are the two highest level taxa in the most recent classification system?

All organisms in the kingdoms Protista, Plantae, Fungi and Animalia are