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:

Net Income

The total profit of a company after all expenses, including taxes and operating costs, have been subtracted from revenue.

Depreciation

A method of allocating the cost of a tangible asset over its useful life.

Indirect Method

A method of presenting the cash flow statement where net income is adjusted for non-cash transactions and changes in working capital to arrive at cash flow from operating activities.

Net Income

The net earnings of a company once all costs and taxes are subtracted from the total income.