James and Jacob Are Identical Twins

question 144

Multiple Choice

James and Jacob are identical twins.They are the result of:

• A) one ovum fertilized by one sperm that split into two zygotes.
• B) two separate ova that were fertilized by two different sperm.
• C) one ovum that was fertilized by two sperm.
• D) two ova that were fertilized by one sperm.

---

Definitions:

Production Possibilities Curve

Represents different combinations of two goods that can be produced with a given set of resources and technology, assuming efficient use of resources.

Domestic Output

The total value of all goods and services produced within the borders of a country within a specific period.

Before-Tax Household Income

The total income earned by all members of a household before any taxes are deducted.

Percent

A way to express a number as a fraction of 100, denoting proportions or ratios.