Evidence For Evolution
Chromosome Connection 2
Worksheet For Responses
Check Questions:
1. _____ Reason?
2. _____ Reason?
Part 1. Bulet B matches scratch pattern on bullet # _____. What does this indicate?
Part 2. Human chromosome #3 perfectly matches _____. This belongs to what animal?__________
What does this indicate?
Part 3. What clearly happened in the ancestral human chromosome # 4 to produce the chimpanzee
chromosome # IV?
Part 4. When chimpanzee chromosomes 2p and 2q are touching end-to-end, with their centromeres
close and their extreme tip ends aligned, how close a match is made to the human chromosome # 2?
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Part 5.
1. Record the number of those sets where the fourth or O chromosome is different from the other
three. Describe the differences.
2. Record the number of those sets where the third or G chromosome is different from the other
three. Describe the differences.
3. Record the number of those sets where the first or H chromosome or the second or C
chromosome is different from the other two. Describe the differences.
4. From the diagram of the “late prophase” chromosomes, determine which 13 Human and
Chimpanzee chromosomes are virtually identical. Record your numbers here.
Check Questions
3. Select your answer and explain
4. Most logical assumption? Select your choice and explain.
5. Should apes and humans all be placed in the same classification family? Why? Why not?
Part 6.
Write a short paragraph about the author’s conclusion to this activity – that humans have more in
common with the gorilla and chimp than these two animals have with the orangutan? (We will
complete the companion activity, Chromosome Fusion, when we study molecular biology in January,
2008.)
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