Evolutionary Relationships

cladogram

phylogenetic tree

evolutionary origin

common ancestor

ancestor

fossil record

paleontologist

anatomical homologies

ancestor

diversity

anatomy

fossil record

evolution.

development.

growth.

ancestry.

anatomy

common ancestry

evolve

evolutionary history

genogram

teddygram

cladogram

candygram

If organisms have a common ancestor, most of their characteristics will be shared.

If two organisms have a shared characteristic, it means one evolved from the other.

If organisms have many shared characteristics, they are likely to be closely related.

If organisms have a shared characteristic, it means they are closely related.

Shared characteristics always exist in the common ancestor and in the modern organism.

Shared characteristics never exist in the common ancestor or in the modern organism.

The more characteristics organisms share, the more closely related they are.

The fewer characteristics organisms share, the more closely related they are.

Shared characteristics can exist among organisms that belong to different species.

1 - characteristics that remain in the common ancestor and the modern organism

2 - characteristics that are new and have been modified from what was found in the common ancestor

1 - characteristics that are new in the common ancestor and the modern organism

2 - characteristics that have been modified from what was found in the common ancestor

1 - characteristics that have been modified in the common ancestor but not in the modern organism

2 - characteristics that are new in both the common ancestor and the modern organism

1 - characteristics that remain in the common ancestor and the modern organism

2 - characteristics that are new in both the common ancestor and the modern organism

It has jaws, but no hollow bones.

It has hollow bones, but no jaws.

It has neither hollow bones nor jaws.

It has hollow bones and jaws.