Evolution Review

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					Evolution Review
Who proposed
inheritance of
acquired
characteristics?
Jean Baptiste Lamarck
What has occurred in the
  second diagram?
What are two types of genetic drift?
Population bottleneck and
   the Founder effect
You’re in a room with 3 monkeys.

   One is holding a banana.
    One is holding a stick.
    One is holding nothing.

 Which primate is the smartest?
• The number of offspring an individual has
  is a measure of his/her evolutionary ____
    Three distantly related mammals adapted
     independently to eat ants and termites.
       This is an example of ___ evolution.




African aardvark                             Asian pangolin




                   South American anteater
Convergent evolution
  One hypothesis as to
 why female cheetahs
    “cheat” is that it
 increases the genetic
diversity of their young.
What are the other two
     hypotheses?
1) to reduce infanticide

2) it requires less energy than
   fighting off the different males
Name 3
vestigial
structures
in humans.
• Ear muscles
• Appendix
• Wisdom teeth
• Tailbone
 Brown trout reproduce in the fall, and
 rainbow trout reproduce in the spring.
This is an example of _______ isolation.
Temporal isolation
Microevolution or Macroevolution?
Snapping shrimp on either side of the
Isthmus of Panama will no longer
interbreed.
Macroevolution
Snapdragon
flowers must be
pollinated to
reproduce, but the
flowers are closed.
A bumblebee has
just enough weight
to open a
snapdragon flower.
This adaptation is
an example of ___.
Coevolution
List 5 pieces of evidence for
evolution.
 1) Fossil evidence
 2) Anatomy
• Homologous structures
• Vestigial structures
• Analogous structures
 3) Embryology
 4) Biological molecules
(DNA and amino acid sequences)
 5) Biogeography
Males of two species of bower
birds make different styles of
nests to attract females. This
is an example of ___ isolation.
Behavioral isolation
     Which male buntings are most
            successful?
a)   bright blue
b)   bluish brown
c)   dull brown
d)   bright blue and bluish brown
e)   bright blue and dull brown
      Which buntings are most
           successful?




e) bright blue and dull brown
Which type of natural
    selection is
demonstrated by the
     buntings?
Disruptive selection
The forelimbs of humans,
  cats, and whales are
considered to be ______
       structures.
Homologous
    Intrasexual or intersexual
            selection?
Female widowbirds prefer to mate with
males that have long tailfeathers.
  Intersexual (female/male)
Female widowbirds prefer to mate with
males that have long tailfeathers.
Galls on goldenrod plants are an example
    of which type of natural selection?
Stabilizing selection
Archaeopteryx is a
   fossil linking
____________ and
 _____________
Birds and reptiles
 (or dinosaurs)
A small number of birds, blown off course
    during migration, find an island and
colonize it. This population will most likely
   experience genetic drift as a result of:
The Founder Effect
Microevolution or Macroevolution?
A labradoodle is a cross between a
labrador retriever and a poodle.
Microevolution
  These 2 squirrels, separated by the
    Grand Canyon, are considered
separated species due to ___ isolation.
Geographic isolation
    There are 5 mechanisms for
             evolution.
One is listed below. Name the other four.
a) Natural Selection
     There are 5 mechanims for
             evolution.
One is listed below. Name the other four.
a) Natural Selection
b) Mutation
c) Gene flow
d) Genetic drift
e) Sexual selection (non-random mating)
    The Amish population in
  Pennsylvania stemmed from
   approximately 200 German
immigrants. They have a much
 higher rate of dwarfism than in
        other populations.
 This is due to the ____ Effect.
Founder Effect
A model of evolution in which short
periods of drastic change in species
 are separated by long periods of
         little or no change
Punctuated equilibrium
Name the 3
   types of
reproductive
  isolation.
Geographic,
behavioral,
 temporal
Homology or analogy?

Crocodiles and birds both care for and
 defend their young.
• The diversification of one ancestral
  species into many descendent species is
  called _______________. The
  descendents are usually adapted to a wide
  range of environments.

				
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