LEC 10 - Macroevolution
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/13
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
14 Terms
what is macroevolution?
the study of diversity over time above the species level
do mass extinctions happen instantaneously?
no
how many mass extinctions have there been so far?
5
why do we think we are living in a 6th mass extinction?
rates of decline are similar to other mass extinctions
how long ago was the last mass extinction and what happened?
65MYA, dinosaurs went extinct
we identify mass extinctions as ___
a rate of loss higher than background
4 possible mass extinction reasons?
volcanic activity, asteroids, climate change, atmospheric changes
what event is the opposite of mass extinction?
rapid origination
why did the extinction of dinosaurs lead to the diversification of mammals?
new habitat available for other animals, less competition for resources
Diversification is associated with the ____ of a new area
colonization
change within groups can be either ____ or ____
gradual or punctuated
what is gradual change in macroevolution?
little changes happening every generation
what is punctuated change in macroevolution?
happens really quickly
difference between macroevolution and microevolution?
microevolution is small scale genetic changes within a population, macroevolution is large scale evolutionary changes above the species level