The name of the supercontinent that use to exist before its separation into the 7 we see today.
Pangea
A person who studies fossils is known as a _____.
Paleontologist
The four bases of DNA are...
A,T,C,G
Embryology is the study of this.
Embryos
Comparative anatomy studies the similarities and differences in...
the anatomy (physical structures of the body)
Continental Drift
What do fossils on the same layer of earth suggest?
They existed in the same time period.
DNA is universal, meaning...
All living organisms on Earth share the same components
As an embryo develops, it will look ________ like the other species.
less
Why does a bird wing and a butterfly wing not help too much in finding their common ancestor?
There anatomy is completely different, suggesting they are not closely related.
Plants found on the coastline of South America, resemble those found on the coast of Africa. This suggests that...
They were once connected and they have adapted over time to their new environment.
Organism A is found deep in the ground and organism B is found in my yard. Why can I not fully conclude if A is the direct ancestor of B?
There needs to be fossils in-between that show the changes over time. They may not be related at all.
More similarities in the genetic code between organisms suggest this.
They are more closely related/ have a more recent common ancestor.
If the embryo of a fish and whale in the earliest stages of development are harshly different, this would suggest that...
They are not closely related/ do not have a recent common ancestor
What does this useless bone inside the whale tell us about its evolution as a species?
It evolved from something that walked on land.
Why do bears on different continents look different from one another?
They evolved over time to better suit their different environments.
What would a fossil found in the layer E suggest about its relationship with a fossil in layer C?
They existed during the same time period so E is not the ancestor of C.
Which organism is most closely related to organism Z and shares a recent common ancestor?
Z: AAA TTT CCC
G: AAT TAT GGG
B: TAA CTT ACC
B
This picture implies that the Bird, Reptile, Human and Pig all....
Have a shared recent common ancestor due to the similarities in embryos
The image below shows what kind of structures?
Homologous
How do you explain the similarities and differences between flightless birds that are found on multiple continents?
The similarities are there because they were once the same population of bird that existed on Pangea. The differences exist because of the environments they live in now. Through mutations and natural selection the population has adapted to where they live.
What is the name of the Law that states older fossils are found in deeper layers of Earth?
Law of Superposition
According to the cladogram, who would have the most differences in DNA to the Horse?
House Cat
Which 2 organisms likely share the most recent common ancestor?
Lizard and Human or Lizard and Chicken?
Lizard and Chicken
Based on the bone structure below, which organisms have the most recent common ancestor?
Human and Bat / Dog and Horse / Bat and Bird
Dog and Horse