A Scientist Discovers a DNA-Based Test for One Allele of a Particular

question 16

Multiple Choice

A scientist discovers a DNA-based test for one allele of a particular gene.This and only this allele,if homozygous,produces an effect that results in death at or about the time of birth.Which of the following statements describes the best use of this discovery?

• A)Screen all newborns of an at-risk population.
• B)Design a test for identifying heterozygous carriers of the allele.
• C)Introduce a normal allele into deficient newborns.
• D)Follow the segregation of the allele during meiosis.

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Definitions:

Cognitive Development

The process by which individuals perceive, think, and gain understanding of their world through the interaction of genetic and learned factors.

Information Processing Approaches

Models that seek to identify the ways individuals take in, use, and store information.

Piaget's Approach

A theory of cognitive development that describes how children construct a mental model of the world through stages of learning and understanding.

Short-term Memory

The capacity for holding a small amount of information in an active, readily available state for a short period of time.