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During Evolution, as Multicellular Organisms Became Ever More Complex, There

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Essay

During evolution, as multicellular organisms became ever more complex, there has been a relentless drive to duplicate DNA sequences. As a result, our genome contains many examples of duplicated exons, duplicated genes, plus duplications of large chromosomal regions. What kinds of advantages might DNA duplication events confer that could enable ever greater functional complexity?


Definitions:

Unit Contribution Margin

The difference between the selling price per unit and the variable cost per unit.

Break-even Point

The level of production or sales volume at which total revenues equal total costs, resulting in no net profit or loss.

Variable Expense

Costs that vary in relation to a company's operations.

Contribution Margin Ratio

A financial performance metric that measures the additional profit generated for each dollar of sales after variable costs are subtracted.

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