Lsu Biol 1202 (Hrincevich) Ch. 26 Hw Expected Questions And Answers 2027

LSU BIOL 1202 (HRINCEVICH) CH. 26 HW EXPECTED QUESTIONS
AND ANSWERS 2027

Question 1.
__________are groups common ancestor

Correct Answer: of organisms that share a unique sister taxa not shared by any
other groups.


Question 2.
The horizontal line indicating a branch on a phylogenetic tree represents ancestral forms
of the named taxon, thereby illustrating the ____________.

Correct Answer: evolutionary lineage


Question 3.
The point at which their common ancestor node.

Correct Answer: two or more lineages diverge from branch point is called a(n)
____________or


Question 4.
Each branch tip on a phylogenetic tree represents a specific group of organisms known as
a(n) ________.

Correct Answer: taxon


Question 5.
The branching pattern whether taxa are closely to other taxa in the determine whether 1.
Fishes and chimps 2. Frogs and humans are lizards and humans. 3. The taxon that shares
ancestor with frogs 4. In this tree, lizards that includes humans

Correct Answer: of a phylogenetic tree indicates 1. False or distantly related
relative 2. True tree. Use this phylogenetic tree to 3. False each statement is
true or false. 4. True have no common ancestors. are more distantly related
than the most recent common is fishes. are the sister taxon of the lineage and
chimps.


Question 6.
Based on this tree, select the correct statement.

A. Taxon A is the sister taxon of the lineage that includes Taxa B and C.
B. Taxon F is the common ancestor to all other taxa shown.
C. Branch point 2 indicates a common ancestor for Taxa A, D, and E, but not B or C.

, D. The sequence of evolution represented on the tree leads to Taxon A, shown at the top
of the tree.

Correct Answer: A. Taxon A is the sister tax-on of the lineage that includes Taxa
B and C.


Question 7.
Use the same diagram to determine whether each statement is true or false. 1. Branch
point 1 represents the common ancestor of Taxa A-F. 2. Taxa D and E arose from a
common ancestor and are sister taxa. 3. Branch point 2 is the common ancestor shared
uniquely by Taxa A, B, and C. 4. Rotating the tree at branch point 2 would change the
relationship between Taxa D and A.

Correct Answer: 1. True 2. True 3. False 4. False


Question 8.
Turtles are not shown on this tree. Turtles are evolutionarily more closely related to lizards
than they are to frogs. Select the phylogenetic tree that best represents the position of
turtles relative to the other taxa shown.

Correct Answer:
https://media.cheg-gcdn.com/coop/7ca/7ca4bca1-monophylaticgroup.png


Question 9.
Which branch point represents the most recent common ancestor of all bears?

A. branch point 1
B. branch point 2
C. branch point 3
D. The most recent common ancestor to all living bears is not shown in this tree.

Correct Answer: A. branch point 1


Question 10.
Which branch point represents the most recent common ancestor of the sloth bear and the
spectacled bear?

A. branch point 1
B. branch point 2
C. branch point 3
D. The sloth bear and the spectacled bear do not share a common ancestor.

Correct Answer: B. branch point 2


Question 11.
Which branch point represents the most recent common ancestor of the Asian black bear
and the brown bear?