phylogeny

phylogeny

evolutionary relationships between organisms

explain how phylogeny is relate to classification (2)

-phylogeny is the basis of classification

-species within the same group share a common ancestor.

advantages of phylogeny (2)

-no overlap between the groups

-produces a continuous tree to show the evolutionary relationships between organisms clearly

phylogenetic tree info

-branch points represent a common ancestor where species diverged.

-the more recent the common ancestor, the more closely related the species

→species that diverged recently share a more recent common ancestor and are more closely related.

-the less recent the common ancestor, the more distantly related the species.

→species that diverged a long time ago are distantly related.

-Species at the ends of the branches are present-day species, while species at start of the tree are species from the past.

in diagram why is A more closely related to B than C?

what letter was first to diverge from the common ancestor?

because the common ancestor is more recent for A and B

E was the first to diverge from the common ancestor