Evolution Pot Luck
The study of developing organisms in utero to show common ancestry.
What is embryology?
The study of the structure and parts of living things.
What is anatomy?
Defined as any remains or traces of an organism that died long ago
What is a fossil?
The process by which populations of organisms change over time and become better adapted to their environment.
What is natural selection?
This scientist served as naturalist that studied finches and proposed the modern undertstanding of evolution.
Who is Charles Darwin?
List 2 structures that we compare when using embryology as evidence for evolution.
What are gill slits and tails?
Organisms that have homologous structures share this.
What is a common ancestor?
In relation to the layers of dirt and rock piled up over time, this is the oldest layer.
What is the layer on the bottom or what is the layer that was laid down first?
An example of this is when humans select which cows to breed in order to get the most milk production from their herd.
What is artificial selection?
These rock layers hold fossils, the oldest being at the bottom
What is relative dating?
This is how embryos can be used for evidence of evolution.
What is by comparing similar structures during development to look for similarities that show they have a common ancestor?
What is a structure that no longer has a purpose, but once did. appendix, coccyx, ear muscles, hair standing muscles, little toe, wisdom teeth, tonsils
What is a vestigial structure?
A fish fossil found in the desert is evidence that the land where the fossil was found here.
What is 'once under water'?
Another term (2 words) for artificial selection.
What is selective breeding?
The shark has this in common with all of the other organism. (See photo on board).
What is a vertebrae?
These two are more closely related (see picture of the three different embryos)
What is the
Structures found in different species that originated from a structure in a common ancestor of the 2 species. Bird wing/Human Arm/Whale Fin/Crocodile Arm/Cat Leg/Bat Wing
What is a homologous structure?
The type of dating that give you an exact age of a fossil.
What is absolute dating?
Of the following, what is not an example of natural selection:
1. 2 animals breed together in a zoo on their own
2. 2 animals with likable traits breed on their own
3. 2 animals with likable traits get bred by people that chose those animals
What is (3), 2 animals with likable traits get bred by people that chose those animals?
This species or horse in the photo (on the board) went extinct around 20 million years ago.
What is the Anchitherium?
A cow embryo shows: gill slits, forelimb bud, tail
A whale embryos shows: Gil slits, forelimb bud, tail
A fish embryo shows: gill slits, tail, fin, and yolk sac
Which two are more related.
What are the cow and whale?
Structures that are found in different species, have similar functions but did not originate from a common ancestor Bird wings/Insect Wings
What is an analogous structure?
The majority of fossils are this kind of creature due to the quickly moving sediment around them.
What is an aquatic/ water organism?
This is a disadvantage of artificial selection
What is lack of genetic variation?