3.2.7 Practice: Evolutionary Relationships Practice Assignment
AP Biology Sem 1 (S4731073) Jillian Lang
Points possible: 25 Date: ____________
1. A biologist discovers a totally new organism living i
...
3.2.7 Practice: Evolutionary Relationships Practice Assignment
AP Biology Sem 1 (S4731073) Jillian Lang
Points possible: 25 Date: ____________
1. A biologist discovers a totally new organism living in a lake in Scotland. How could the biologist use the cladogram below to begin analyzing the new organism? Pose a question that makes use of the cladogram in finding an answer. (7 points)
How does the relationship of groups of animals that have evolved new evolutionary features over time line up on a cladogram?
2. Construct a cladogram using the information provided in the table below. Each of the characteristics listed in the top row of the table are shared derived characteristics of the four species A, B, C, and D. (4 points)
Antennae Multicellular Exoskeleton Bilateral Symmetry
Species A
Species B
Species C
Species D
3. A cladogram based on physical morphologies was created to show the evolutionary relationships between several species. Later, DNA sequences were obtained for the same gene in these organisms. Those sequences are shown below. Evaluate the sequencing data to determine whether it supports the existing cladogram. If there are any inaccuracies, explain how they can be corrected. (7 points)
Original cladogram:
Organism DNA Sequence
Camel
Whale
Hippo
Pig
45 letters
Percent Same Camel Whale Hippo Pig
Camel 93 93 96
Whale 93 98 96
Hippo 93 98 96
Pig 96 96 96
4. Researchers claim that humans can manipulate heritable information. Justify this claim by describing two commonly used technologies that people use to manipulate heritable information. (7 points)
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