Vocabulary
Evolutionary Trees & Cladograms
Similarities and Differences
Embryology
Evolutionary Time &Events
100
A group of organisms of the same type that can reproduce with each other.
What is a species?
100
The most distant relative of the chimpanzee.
What is the lemur?
100
Similarities in the body structures of species is possible evidence that the species are ___________.
What is related?
100
Some snake embryos have small buds that resembles limbs during later stages of embryonic development. What does having these limbs tell us about their evolutionary history?
That these snakes evolved from an ancestor that had limbs
100
Number of the most recent layer/event.
What is 3?
200
An older species from which 2 or more different species evolved.
What is a common ancestor
200
This is a direct descendant of the oldest common ancestor.
What is the shark?
200
Paleontologists compare __________ to find similarities between species (both living and dead)
What are body structures?
200
At the first stage, these embryos all share this structure. (Provide one similarity)
What are:
- Gill slits
- Eyes
- Notochord
- Tail
- Dorsal Hollow Nerve Cord
200
True or False: Multicellular life has been present for the entirety of Earth's history.
False. For most of Earth's history (3.5 billion years) life either didn't exist or consisted of single celled organisms.
300
The study of the similarities and differences of body structures of different species.
What is comparative anatomy
300
There are 7 of these on this cladogram.
How many traits are there?
300
A trait shared by the platypus, kangaroo, and elephant. (2 possible answers)
What is:
- Mammary glands?
- Hair?
300
Why do scientists compare the embryos of different species in addition to fully formed organisms of those species?
Because embryos have structures that are not present in the fully formed animals, which can show relationships that are not apparent by comparing fully developed structures.
300
This is the most common division of time used to describe events on Earth - Paleozoic, Mesozoic, and Cenozoic are used with this word. Also, Taylor Swift uses it all the time.
What is an era?
400
Changes in the frequency of alleles (genes that code for certain traits) over time
Evolution
400
These are animals that share a recent common ancestor. (3 possible answers)
What are:
- Mammal-like reptiles and mammals?
- Non-avian dinosaurs and birds?
- Snakes and lizards?
400
Features that are sharedd by all chordates (name at least 2)
What are:
-Notochord
-Pharyngeal gill slits
-Postanal tail
-Dorsal hollow nerve cord
400
At this stage it can be seen that the pig and the human are more closely related to each other than to the fish by looking at what feature? (Name one, there are two)
What are ears and limbs
400
This fossil could be considered an index fossil.
What is A?