Why Is It Thought That Certain Primitive Fish Diverged from Vertebrates

question 29

Multiple Choice

Why is it thought that certain primitive fish diverged from vertebrates before the globin gene was first duplicated?

• A)The fish are very old.
• B)The fish do not have any hemoglobin.
• C)The hemoglobin of the fish consists of 8 polypeptide subunits.
• D)These fish have only one globin gene instead of multiple globin genes, suggesting that they diverged from other vertebrates before the first duplication of the globin gene.
• E)These fish have four globin genes instead of a single globin gene, suggesting they diverged from other vertebrates before the first duplication of the globin gene.

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Definitions:

Self-Esteem

An individual's perception of their own worth or value.

Incapable

Lacking the ability, strength, or competence to do something effectively or as required.

Sufficient

Enough to meet the needs of a situation or a proposed end.

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The conscious knowledge of one's own character, feelings, motives, and desires, being aware of and understanding one's self.