Bryan has just been diagnosed with attention deficit hyperactivity disorder (ADHD). His sister Sarah has never been diagnosed with ADHD. Which of the following genes might differ between Bryan and Sarah?
A) DRD4
B) SSRI
C) 5-HTT
D) APOA

Question

Quizplus · Accepted Answer

DRD4 is a gene associated with dopamine regulation in the brain, which has been linked to ADHD in various studies. SSRI is not a gene but a type of medication (Selective Serotonin Reuptake Inhibitors), 5-HTT relates to serotonin transport but is less directly associated with ADHD, and APOA is not directly linked to ADHD.

Bryan Has Just Been Diagnosed with Attention Deficit Hyperactivity Disorder