1. Questions 1. – 3. Biological definition of a species
A group of populations whose members are capable of ____________and producing ________ and _______ offspring.

2. 4. What is a zygote?

3. 5. Allopatric or Sympatric Speciation?
Sciurus aberti kaibabensis
Sciurus aberti aberti

4. These 2 species of toads are similar and living in the same area but are (somewhat) reproductively isolated by different mating seasons Allopatric or Sympatric Speciation?
7. Pre-or post-zygotic???
What word is used when similar organisms are separated
by time?
American toad
Bufo americanus
Fowler’s toad
(Bufo fowleri)

5. Sympatric Speciation
These 2 species of meadowlarks look alike but do not sing the same song, but they are singing around the same time.
9. Pre- or
Postzygotic?
10. Identify the
reproductive
isolating
mechanism.
Western Meadowlark
(Sturnella neglecta)
Eastern Meadowlark
(Sturnella magna)

6. Aristotle ( B.C.)
List three things you know about Aristotle and his method of classifying organisms.

7. Carol von Linné (1707 – 1778) “Father of Taxonomy”
List 5 things you know about Linnaeus and his method for classifying organisms.

8. Taxa of Classification
List all 8 taxa in order and then classify
our own species.
(We are in the family Hominidae)

9.                                   
           
What Linnaean idea
is NOT supported by the
fossil record of equines?

10. 15. What is the definition of homologous structures?
WHALE
BAT
MAN
CAT
HORSE

11. 16. Why is this an example of analogous structures?

12. 17. List the 4 key characteristics for all chordates.

13. 18. What taxonomic term is best illustrated here?

15. Cladogram
placenta
produce milk
internal fertilization
legs

16. An Example of Cladogram Construction for Vertebrates
Outgroup
(lobed-finned fish)
Trait
Turtle
Kangaroo
Mouse
Human
Dorsal Nerve Cord
Yes
Legs NO
Nature of Egg
Requires water
Hard shell prevents drying
Develops inside the mother
Nature of development
In egg
Marsupial
Placental
Hair No
reduced
Presence of pouch
Bipedal posture

17. 1st Phylogenetic Tree

19. Bird Tree of Evolution