A group of researchers are trying to determine the relationship between various groups of organisms. The researchers analyze the amino acid sequence of the protein cytochrome c in various groups of organisms. Once they sequence cytochrome c in all organisms, they determine the number of amino acid substitutions in each group. The results can be seen in the graph below, which plots the data with respect to the time since the divergence of the members of paired groups from a common ancestor. mammals and reptiles Number of Amino Acid Substitutions (per 100 amino acids) in Cytochrome, c 50+ 40+ 30- 20+ 10+ 200 400 600 800 1,000 1,200 Time Since Divergence from a Common Ancestor (millions of years) fish and land vertebrates amphibians birds and mammals flowering plants and animals O birds and reptiles A graph showing when various groups of organisms diverged from a common ancestor insects and vertebrates birds and mammals Based on the graph above, can you conclude which of the following organisms are most distantly related?
A group of researchers are trying to determine the relationship between various groups of organisms. The researchers analyze the amino acid sequence of the protein cytochrome c in various groups of organisms. Once they sequence cytochrome c in all organisms, they determine the number of amino acid substitutions in each group. The results can be seen in the graph below, which plots the data with respect to the time since the divergence of the members of paired groups from a common ancestor. mammals and reptiles Number of Amino Acid Substitutions (per 100 amino acids) in Cytochrome, c 50+ 40+ 30- 20+ 10+ 200 400 600 800 1,000 1,200 Time Since Divergence from a Common Ancestor (millions of years) fish and land vertebrates amphibians birds and mammals flowering plants and animals O birds and reptiles A graph showing when various groups of organisms diverged from a common ancestor insects and vertebrates birds and mammals Based on the graph above, can you conclude which of the following organisms are most distantly related?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:A group of researchers are trying to determine the relationship between various groups of
organisms. The researchers analyze the amino acid sequence of the protein cytochrome c
in various groups of organisms. Once they sequence cytochrome c in all organisms, they
determine the number of amino acid substitutions in each group. The results can be seen
in the graph below, which plots the data with respect to the time since the divergence of
the members of paired groups from a common ancestor.
A
B
mammals
and reptiles
с
Number of Amino Acid Substitutions
(per 100 amino acids) in Cytochrome, c
D
60-
50+
40+
30-
20+
10+
0
0
O birds and reptiles
A graph showing when various groups of organisms diverged from a common ancestor
Based on the graph above, can you conclude which of the following organisms are most distantly related?
200
400
600
800 1,000
Time Since Divergence from a Common Ancestor
(millions of years)
fish and
land vertebrates
mammals and reptiles
birds and mammals
insects and vertebrates
1,200
amphibians birds
and mammals
Vinsects and vertebrates ★ birds and mammals
fish and land vertebrates
flowering plants
and animals
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