The 2005 AHA Guidelines for CPR and ECC did note that if the rescuer was unwilling or unable to provide ventilations, the rescuer should provide chest compressions only. Hands-Only CPR or CPR with both compressions and rescue breaths.
In psychology, the Big Five personality traits are five broad domains or dimensions of personality that are used to describe human personality, otherwise described as the five-factor model (FFM). The five factors are openness, conscientiousness, extraversion, agreeableness, and neuroticism.
Remember, genes are not the only thing responsible for our personality because personality is a complex trait. A complex trait is a trait that is influenced by many different genetic and environmental factors. There is also no one 'personality gene' because personality traits are polygenic. This means that multiple genes are involved in determining a trait.