What are the three Domains of Life on Earth?

Structures shared by different organisms that perform different functions, but are similar in structure, and indicate a common ancestral origin. Example:  Vertebrate forelimb structures from a horse, a human, a fish, and a whale.

______________disease is caused by an infection of a corkscrew-shaped spirillium bacteria known as Borrelia berdorferi

A population of one species disperses throughout an area and each finds a unique and distinct niche or isolated habitat.  Over time, the varied demands of their new habitats leads to multiple speciation events originating from one common ancestor.

The point at which a split occurs in a phylogenetic tree, called a _______ _____, represents where a single lineage evolved into a distinct new one.

Phylogeny is the study of…

______________________ may represent the earliest forms of life on Earth.  Fossil evidence of their presence starts about 3.5 billion years ago.  These are large biofilms, a multilayered sheet of prokaryotic organisms.

Homologous Structures are evidence of __________________ Evolution, meaning all the diversity of life originated with one common ancestor.

The definition of a ___________ are groups of organisms grouped together, that are most closely related to each other, and their common ancestor, from which they originated.

Which membrane has a high protein content and a high proportion of galactose-containing glycolipids?