Sex determination in mammals is due to the SRY region of the Y chromosome. An abnormality of this region could allow which of the following to have a male phenotype?
A) Turner syndrome, 45, X
B) translocation of SRY to an autosome of a 46, XX individual
C) a person with an extra X chromosome
D) a person with one normal and one shortened (deleted) X
E) Down syndrome, 46, XX

Question

Quizplus · Accepted Answer

Translocation of SRY to an autosome of a 46, XX individual would allow for a male phenotype even without a Y chromosome. This is because the SRY gene, which is responsible for male sex determination, is now present on an autosome instead of the Y chromosome.

Sex Determination in Mammals Is Due to the SRY Region