Classification Flashcard Review

Front

What domain do single-celled organisms found only in Earth's harshest environments belong to?

Back

Archaea

Front

Which organism is most distantly related to humans according to a cladogram: crayfish, grasshopper, perch, or frog?

Back

Crayfish

Front

What does similar DNA between two species likely indicate?

Back

These animals have a common ancestor.

Front

Which node represents the most recent common ancestor of organisms D and G?

Back

Gray

Front

What is the most specific level of classification?

Back

Species.

Front

What are the three domains of life?

Back

Bacteria, Archaea, Eukarya.

Front

What is a cladogram?

Back

A diagram that shows the evolutionary relationships among various biological species.

Front

What is the significance of the species classification?

Back

It is the most specific level of classification, identifying individual organisms.

Front

What does it mean if two species share a high percentage of DNA?

Back

They are likely closely related and may share a recent common ancestor.

Front

What is the difference between Eukarya and Archaea?

Back

Eukarya have complex cells with a nucleus, while Archaea are single-celled and often found in extreme environments.