Using the evolutionary tree above, which two organisms share the most recent common ancestor? Explain why you chose your answer.
Question 14
14.
Review Materials
OLS Readings
2.01 Adaptations
2.02 Genetic Variation
2.03 Natural Selection
2.04 Allele Frequency in a Population
CK12 Population Genetics
Understanding Evolution
Natural Selection
Natural Selection at Work
Adaptation
Question 15
15.
Review Materials
OLS Readings
2.05 Evolution and Populations
2.07 Genetic Isolation
2.08 Geographic Isolation
2.10 Evidence for Evolution -- Molecular Genetics
2.11 Evidence for Evolution -- Anatomy
2.12 Evidence for Evolution -- Earth's History and Fossils
CK12
Mutations
Comparative Anatomy
Understanding Evolution
Trees not Ladders
How We Know What Happened When
Question 16
16.
Question 1
1.
Question 2
2.
The base of the tree represents __________ and the top represents __________
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Question 12
12.
I can explain with evidence how natural selection leads to adaptation of populations.
I can support with evidence that common ancestry and biological evolution are supported by multiple types of evidence.
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This diagram is a best guess at how these organisms may be related.
True
False
What occurs at each branch point?
A species went extinct
One lineage splits into two
One species evolved into another species
The branches are defined by the differences in the traits of the descendants.
True
False
What trait evolved in the lineage after the first branch point?
wings
antennae
body segment
longer abdomen
What trait evolved in the lineage after the second branch point?
wings
antennae
body segment
longer abdomen
What trait evolved in the lineage after the third branch point?
wings
antennae
body segment
longer abdomen
What trait evolved in the lineage after the last branch point?
body segment
wings
antennae
longer abdomen
Which two organisms share the closest common ancestor?
Rotating the order of the organisms at the top of the tree changes the relationships between them.
True
False
What evidence supports the order of the organisms?
embryology
observations
fossils
experiments
Evolutionary trees are 100% correct and are not redrawn.