Review Answers

EVOLUTION REVIEW
1.
Make a cladogram with the following
Lancelet
Vertebral
Column (A)
Jaws (B)
Fins (C)
Four
Walking
legs (D)
Amniotic
Egg (E)
Hair (F)
Lamprey
X
Tuna
X
Salamander
X
Turtle
X
Leopard
X
X
X
X
X
X
X
X
X
X
X
X
Leopard
Turtle
Salamander
F
Tuna
E
C
D
Lamprey
lancelet
et
B
A
Answer the following questions
1. Which organism is most related to the leopard? ____Turtle________
2. What separates a salamander from a turtle ?___Amniotic Egg____________
3. Which organisms’ DNA is most similar to the turtle? ______Salamander_________
Answer the following questions.
1.
What kind of evidence does the picture represent towards evolution?
Answer: Homologous Structures
2.
Explain the types of evidence of evolution and give examples of each. (See notes for evidence
of evolution notes for descriptions)
__Fossils_______________
_Homologous structures
_Amino Acid sequences/ DNA sequences________________
Embryology_________________
_Anatomy/ physical traits __________________
3.
List the 5 main evolutionary forces that act on a population to cause evolution. (See notes for
descriptions. You need to know examples of each and how they work)
____Genetic Drift_____________ ______Gene Flow______________________
_____Natural Selection______________________
____Non-Random Mating
______Mutations ___________________
4.
Why were the beaks that Darwin found on the Galapagos islands different? What caused it?
According to what food was available- The environmental conditions caused the changes. (see
theory of evolution notes)
See notes on natural selection – Theory of evolution notes
5. The ability to taste PTC is due to a single dominate allele "T". You sampled 215
individuals in a biology class, and determined that 150 could detect the bitter taste of
PTC and 65 could not.
How many will be Homozygous Dominant= 20%
, Heterozygous= 50%
Homozygous Recessive= 30%
6. What kind of rock are fossils made it? Sedimentary Rocks
7. What is Natural Selection? What is its role in Evolution? Natural selection is when
organisms that are more suited for the environment will prevail. The less suited will die
off. Natural selection creates evolution---- The environment controls Natural Selection
8. What is Descent with Modification? See theory of evolution notes
9. Explain how a new species is formed. Theory of evolution notes- See isolation
10. Explain the bottle neck effect and the Founder effect. See Population notes
11. Explain gradualism and Punctuated equilibrium. See Evidence of evolution notes
12. What is isolation? Explain Theory of evolution notes.