Question

Questions 4-6 will focus on the example phylogeny below. This phylogeny is a simplification that uses made up animals. Each black letter refers to a species. Each blue letter represents an extinct common ancestor. Each red square represents an innovation and is labeled with the new trait. A B C D G Loss of Stripes Tail Jaws Eyes F Antennae Legs E Stripes 4. Define the term "outgroup" in your own words and identify the outgroup in this phylogeny. (1 pt) 5. In your own words, define "Sister groups." Based on this phylogeny, which two species are sister species? (1 pt) 6. Identify the common ancestor shared by species B, C, and D. What traits would you expect this common ancestor to exhibit? (2 points).

          Questions 4-6 will focus on the example phylogeny below. This phylogeny is a simplification that uses made up animals. Each black letter refers to a species. Each blue letter represents an extinct common ancestor. Each red square represents an innovation and is labeled with the new trait.

A
B
C
D
G
Loss of Stripes
Tail
Jaws
Eyes
F
Antennae
Legs
E
Stripes

4. Define the term "outgroup" in your own words and identify the outgroup in this phylogeny. (1 pt)
5. In your own words, define "Sister groups." Based on this phylogeny, which two species are sister species? (1 pt)
6. Identify the common ancestor shared by species B, C, and D. What traits would you expect this common ancestor to exhibit? (2 points).

Questions 4-6 will focus on the example phylogeny below. This phylogeny is a simplification that uses made up animals. Each black letter refers to a species. Each blue letter represents an extinct common ancestor. Each red square represents an innovation and is labeled with the new trait.

A
B
C
D
G
Loss of Stripes
Tail
Jaws
Eyes
F
Antennae
Legs
E
Stripes

4. Define the term "outgroup" in your own words and identify the outgroup in this phylogeny. (1 pt)
5. In your own words, define "Sister groups." Based on this phylogeny, which two species are sister species? (1 pt)
6. Identify the common ancestor shared by species B, C, and D. What traits would you expect this common ancestor to exhibit? (2 points).

Added by Jeremy J.

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