Question

Cytochrome c is an enzyme located in the mitochondria of eukaryotic cells. The number of differences in the amino acid sequences of Cytochrome c from
different species area compared to human Cytochrome c in the data table below.
Differences in Amino
Acid Sequences
Organism Number of Differences in
Cytochromec
Compared to Humans
tuna
21
mold
48
moth
31
dog
11
horse
12
chicken
13
monkey
How can this sequencing be used to determine relationships for common ancestry in different species?
A- The fewer the differences, the closer the relationship and more likely the organisms share common ancestry
B- The fewer the differences, the further apart the relationship and the less likely the organisms share common ancestry
C- The higher the differences the closer the relationship and more likely the organisms share common ancestry
D- The higher the differences the further apart the relationship and the more likely the organisms share common ancestry

Answer 1

Answer:c is the answer

Answer 2

The fewer the differences, the closer the relationship and more likely the organisms share common ancestry.

• More closely related organisms will have more similar Cyt C because they have more recent common ancestor.

What is the role of cytochrome C in evolutionary studies?

• Cytochrome C is a highly conserved enzyme that plays a role in respiration.
• Since this molecule changes little over time, it provides evidence of evolution.
• Also, most organisms have this molecule and scientists could determine the relatedness of the organisms based on their variations in their amino acid sequence.

To know more about Cytochrome C here

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