As a geneticist, you found that afetus has 47 chromosomes. What would be the most likely conclusion drawn from this information?
A) The child has Down syndrome
B) The child has sickle-cell anemia
C) The child has phenylketonuria (PKU)
D) This is a normal number of chromosomes

Question

Quizplus · Accepted Answer

The most likely conclusion is that the child has Down syndrome, which is characterized by an extra chromosome 21, resulting in a total of 47 chromosomes instead of the normal 46. Sickle-cell anemia and phenylketonuria (PKU) are genetic disorders caused by specific gene mutations, not by an abnormal number of chromosomes.

As a Geneticist, You Found That Afetus Has 47 Chromosomes