What Is a Major Difference Between the Development of Drosophila

question 26

Multiple Choice

What is a major difference between the development of Drosophila or Xenopus and that of humans?

• A)Drosophila and Xenopus do not undergo gastrulation;humans do.
• B)Drosophila and Xenopus undergo metamorphosis;humans do not.
• C)Drosophila and Xenopus do not show development of germ layers;humans do.
• D)In Drosophila and Xenopus,the notochord remains;in humans,it disappears.
• E)Drosophila and Xenopus do not undergo blastula formation;humans do.

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Definitions:

Aggregate Supply Curve

A graphical representation showing the relationship between the overall price level in the economy and the total output produced by firms.

Fixed Costs

Expenses that do not change with changes in the level of production or sales, such as rent, salaries, and insurance premiums.

Marginal Cost

The expense incurred from manufacturing an extra unit of a product or service.

Average Cost

The total cost of production divided by the number of goods or services produced, often used to determine profitability.