Evolution Review
Vertebrate embryos exhibit _________________ during certain
How does
embryology
show evidence
for evolution?
phases of development that become totally
different structures in the adult forms. These
homologous structures can be seen ______
_______________________. They have
a _________________________ called
__________________. In fish, the pouches develop into gills. In reptiles, birds
and mammals, these structures become parts of the ears, jaws, and throats.
What arm bones
are considered
to be
homologous
structures in
vertebrates?
What are
cladograms and
how are they
used to infer
evolutionary
relationships?
How can the fossil
record be used
as evidence for
evolution?
Homologous Structures: _____
_____________________
_________ Analogous
Structures: __________
_________________
Vestigial structures:
________________
____________________________
______ is a method that classifies organisms according to the order that they
diverged from a common ancestor. ___________________________that
do not appear in the fossils of common ancestors, are used to __________,
___________________ a branching diagram that _________________
_________________________
The cladogram is constructed by
_________________________
_________________________
with respect to the outgroup. The
____________________ (groups)indicate
the __________________________. The
______________________________
is closest to the lily _________________
__________ (characteristics) with lilies and
_______________________________
_______________________________
The __________ where the branches
originate represent __________________.
Fossils provide a record of species that lived long ago and
supply some of the most significant evidence of evolutionary
change. Fossils can be aged by ______________________
__________________. When looking at the fossil record and
comparing it to the entire history of the earth, most of the
__animals on the earth, including humans have been around for
________________________________________.
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Evolution Review
Scientific data shows that common ancestry can be
seen in the complex metabolic molecules that many
different organisms share. Cytochrome C is an
enzyme that is essential for ______________ and
is highly conserved in animals. Despite slight variations
in its amino acid sequence the _______________
____________________________. Molecules in
species with a __________________________
_________________________________. The
more _____________________________, the
____________________________________
What is the
comparative
molecular
biology
evidence for
evolution?
Population
genetics and
relationships
among
organisms
Test Hints:
Animal Relationships:
Mutualism: ____________
___________________
___________________
Commensalism: ________
___________________
___________________
Parasitism: ____________
___________________
___________________
Predation: ____________
___________________
___________________
300
250
Number
What is the order
of the
evolutionary
timeline?
The fossil record shows that the
first life forms were ________.
Once oxygen formed in the
atmosphere, _____________
________________, followed
by ____________________
______________________
______________________.
population
size
200
150
Average
body size
100
50
0
1
3
5
7
9 11 13 15
Generation
In the above graph what is the carrying capacity?
___________. Where is the selective (natural
selection) pressure strongest? _______ Where is it
the weakest? _________________________
- Know the difference between high fitness and low fitness. __________________________
- Mules are sterile (unable to have offspring)
- Disruptive Selection splits a population into 2 groups leading to the creation of new species.
- Although bacteria reproduce through asexual binary fission, they continue to adapt to their
environment through mutations.
- Genetic drift can occur when a sudden natural disaster wipes out a portion of the
population.
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