Which of the following relationships exist between intelligence and a subset of individuals with Down syndrome called mosaics?
A)Mosaics have severely impaired IQs relative to the mild retardation seen in non-mosaic Down syndrome patients.
B)Mosaics have relatively normal IQs relative to other Down syndrome patients.
C)IQ tests for non-mosaic Down syndrome patients are more accurate and have greater validity in representing an IQ score.
D)There is no difference in IQ between mosaic and non-mosaic Down syndrome patients.

Question

Quizplus · Accepted Answer

Mosaicism refers to a situation where an individual has some cells with an extra chromosome 21, and some cells with the typical chromosomal makeup. Mosaics with Down syndrome have been found to have relatively normal IQs, even though they still exhibit some of the physical characteristics of Down syndrome. Therefore, choice B is the best answer.

Which of the Following Relationships Exist Between Intelligence and a Subset