The pedigree below is following a certain trait that is NOT Y-linked. 
Which individuals are expected to have essentially the same Y chromosome?
Definitions:
Clinical Psychology
A branch of psychology focused on diagnosing and treating mental, emotional, and behavioral disorders.
Diagnosis
The identification of the nature and cause of a certain phenomenon, typically concerning the determination of a medical condition from its signs and symptoms.
Psychological Problems
Issues affecting one's mental health, characterized by emotional, cognitive, or behavioral abnormalities.
Psychologists
Professionals who study mental processes and behavior by observing, interpreting, and recording how individuals relate to one another and their environments.
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