ZOOL 4133: Lecture 1- evidence for evolution
19 Cards in this Set
| Front | Back |
|---|---|
|
What is Evolution?
|
Change of inherited traits through successive generations
Interaction between processes that generate and eliminate variation in a population
|
|
Applied Evolutionary Biology
|
Agriculture
Medicine
Conservation
Law enforcement
|
|
What are the 3 predictions of Darwin's hypothesis of descent with modification?
|
Species change through time
Species are not independent, but are connected by descent from common ancestor
Life on earth is old
|
|
Vestigial Organs
|
Functionless or rudimentary version of a trait that has a function in close relative
|
|
What 2 things can Vestigial organs be?
|
Structural
Developmental
|
|
Underlying genes are ________ in Vestigial organs?
|
Present
|
|
Transitional forms in the fossil record provide what?
|
evidence for the gain and loss of prominent characteristics over time.
|
|
Tiktaalik
|
a transitional form between fish and tetrapod
|
|
Phylogenetic trees
|
representations of the fact that species are related by descent from a common ancestor
|
|
Ring Species
|
Species that are in the process of splitting into two
|
|
homologous structures
|
characteristics that are derived from a common ancestor
|
|
analogous structures
|
apparently similar (usually in function) yet phylogenetically independent
|
|
The wings of pterosaurs, bats and birds are analogous as (1)____________, but (2) as forearms._________
|
(1) analogous
(2) homologous
|
|
________ arise when processed mRNA is reverse transcribed and inserted into the genome.
|
Pseudogenes
|
|
_________ have no function in the genome
|
pseudogenes
|
|
Since pseudogenes have no function in the genome, 1______ accumulate over time, which allows for an 2_________
|
1. mutation
2. estimation
|
|
Facts
|
---
|
|
Theory
|
structures of ideas that explain and interpret facts.
|
|
Evolutionary theory
|
attempts to explain the mechanism of evolution
|
ZOOL 4133: phylogenetics