Professor Smith studies the genotype of a boy and finds that he has 47 chromosomes. This child most likely what kind of disorder?

Question

Quizplus · Accepted Answer

Down syndrome is a genetic disorder where there is an extra copy of chromosome 21, resulting in a total of 47 chromosomes instead of the usual 46. Therefore, the fact that the boy has 47 chromosomes suggests that he most likely has Down syndrome. Options A and B are incorrect as they do not make sense in the context of the given information. Option D is incorrect as Turner syndrome typically involves only having 45 chromosomes, not 47.

Professor Smith Studies the Genotype of a Boy and Finds