Most males born with an extra Y chromosome
A)die shortly before or after birth.
B)are violent and anti-social.
C)are tall but are otherwise normal.
D)are phenotypically female.

Question

Quizplus · Accepted Answer

Most males born with an extra Y chromosome, also known as XYY syndrome, are tall but are otherwise normal. They may have slight learning and behavioral difficulties, but are not necessarily violent or anti-social. They may also have an increased risk for certain medical conditions such as developmental delays, speech delays, and ADHD. Additionally, they have a normal male reproductive development and are not phenotypically female.

Most Males Born with an Extra Y Chromosome