Trisomy 21,or Down Syndrome,occurs When There Is a Normal Diploid

question 45

Multiple Choice

Trisomy 21,or Down syndrome,occurs when there is a normal diploid chromosomal complement but one extra) chromosome 21.Although fertility is reduced in both sexes,females have higher fertility rates than males.Van Dyke et al.1995; Down Syndrome Research and Practice 32 : 65-69 summarize data involving children born of Down syndrome individuals.Assume that children are born to a female with Down syndrome and a normal 46- chromosome male.What proportion of the offspring would be expected to have Down syndrome?

• A)None of the offspring would be expected to have Down syndrome.
• B)One- half of the offspring would be expected to have Down syndrome.
• C)One- third of the offspring would be expected to have Down syndrome.
• D)Two- thirds of the offspring would be expected to have Down syndrome.
• E)All the children would be expected to have Down syndrome.

Recognize and explain the phenomena of economies of scale and diseconomies of scale.

Identify explicit and implicit costs in business operations and their impact on profit calculation.

Assess strategies for incentivizing efficient work behavior in employees.

Evaluate the significance of economic profit versus accounting profit in business sustainability.

---

Definitions:

Validity Error

A discrepancy or mistake that affects the accuracy or truthfulness of a test's results.

Content Validity

The extent to which a test or measure represents all facets of a given construct or domain.

Given Construct

A given construct refers to a specific concept or theoretical idea that is established and used as a basis for research or analysis.

Content Validity Ratio

A ratio of the number of raters who evaluate an item and the number of raters who deem an item to be an essential component of the construct being measured.