Chapter 26 - Phylogeny and the Tree of Life

Phylogenetic trees

________ are built using shared characteristics.

Phylogenies

________ based on rRNA genes show that eukaryotes are most closely related to archaea, whereas data from other genes show a closer connection to bacteria.

Linnaean system

The ________, named after Linnaeus, groups related genera into families, families into orders, orders into classes, classes into phyla (singular, phylum).

clade

A(n) ________ is a monophyletic group consisting of an ancestor species and all of its descendants.

evolutionary history

The genome contains information about an organism's ________.

diverse shapes

Creatures with comparable morphologies or DNA sequences are more likely to be linked than organisms with radically ________ and genetic sequences.

Linnaeus

________ not only named species but also classified them into a hierarchy of progressively comprehensive groups.

Categorization

________ should be fully based on evolutionary links* Names are only allocated to groupings that share a common ancestor and all of its descendants under such systems.