Types of Evidence
This type of evidence is from remains or traces of life, which gives us an idea of what life looked like in the past.
Fossil Evidence
Where can the oldest fossils be found in layers of rock?
Organisms on a line that ends before the timeline ends are considered...
Extinct (Died out)
The front legs of cats, whales, and birds contain similar bone patterns inherited from a common ancestor.
What are homologous structures?
Comparative embryology, which compares embryos of various species, have revealed that vertebrate animals share a _____________ with each other.
Common Ancestor
When comparing DNA sequences, the organisms with the (most/least) differences are the most related.
Least
What is the definition of a species?
A group of organisms that can interbreed.
Early embryos of fish, chickens, and humans look very similar during development.
What is embryology?
Comparative Anatomy, which compares body structures, have revealed ___________ structures, which once served a function, but no longer do.
Vestigial
Homologous
Humans and chimpanzees are connected by an organism in the past. This organism is their ___________
Common Ancestor
Humans and chimpanzees share about 98–99% of their DNA.
What is Molecular evidence (DNA evidence)?
Comparative Anatomy, which compares body structures, have revealed ___________ structures, which have different functions but the same evolutionary origin.
Homologous
Whale flippers contain finger bones. These are examples of _____________ structures.
Vestigial
Name four types of physical evidence of evolution that we learned this year?
Fossils
Embryology
Comparative Anatomy
Comparative Biochemistry (Molecular Biology)
Biogeography
Marsupials are mostly found in Australia, showing that species evolved separately because of geographic isolation.
What is biogeography?
Comparative biology is the most universal type of physical evidence, in which we compare __________ of various species.
Molecules (DNA )
Whale flippers contain different bone structures to shark fins. These are ____________ structures.
Analogous
An organism that is in the middle of a line, representing a form that changed over time rather than dying out, is considered a...
Transitional Species
Snakes still have tiny pelvic bones even though they no longer have legs.
What are vestigial structures?