Question

Jacobs syndrome in humans, which is manifested by a higher than average stature and potential

behavioral problems, is caused by which chromosomal condition?
A) triploidy
B) 45, X
C) 47, 21+
D) 47, XYY

Answer 1

Jacob's syndrome is caused by a karyotype of 47, XYY, which is an extra Y chromosome, making D) 47, XYY the correct answer.

Step-by-step explanation:

Jacob's syndrome in humans is manifested by characteristics such as a higher than average stature and potential behavioral problems. This condition is caused by a chromosomal condition where there is an extra Y chromosome, resulting in the karyotype 47, XYY. Therefore, the correct answer to the question is D) 47, XYY.

For clarification, the genotype XXY corresponds to Klinefelter syndrome, not Jacob's syndrome. Individuals with Klinefelter syndrome typically have small testes, enlarged breasts, and reduced body hair. Turner syndrome is denoted by the karyotype 45, X, representing females with short stature and other physical abnormalities. The condition known as triploidy involves having a full extra set of chromosomes, which is incompatible with life outside the womb.