Which of the Following Is Not a Piece of Evidence

question 39

Multiple Choice

Which of the following is not a piece of evidence that supports the radial loop-scaffold model of DNA packaging?

• A) Histone-depleted metaphase chromosomes still maintain their X-like shapes.
• B) Electron micrographs of whole-mounted mitotic chromosomes show loops of chromatin at the periphery of the chromosomes.
• C) Topoisomerase II assists in 100Å packaging.
• D) Special,irregularly spaced repetitive base sequences associate with nonhistone proteins to define the chromatin loops.
• E) All of the choices are such evidence.

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Definitions:

Marginal Cost

The expense associated with manufacturing an extra unit of a product or service.

Average Fixed Cost

is calculated by dividing the total fixed costs of production by the quantity of output produced, showing the cost per unit of output.

Total Variable Cost

The sum of all variable expenses related to the production of goods or services, which vary with the level of output.

Total Cost

The sum of all costs incurred by a business in producing a certain quantity of a good or service.