Are there studies which imply that religiosity and belief are genetically predetermined?

What this does and does not mean

• The evidence supports partial heritability, not genetic predetermination .

• These studies should not be read as evidence for a single “religion gene” or for genes determining whether someone becomes Christian, Muslim, atheist, or religious in general .

• A plausible interpretation is that genes influence broader traits or dispositions that may affect religiosity indirectly, such as community orientation or desire for existential certainty .

• Heritability means that genetic differences help explain some variation between people in a measure; it does not mean an individual’s beliefs are fixed by genes .

Caveat

• The evidence is strongest for broad measures of religiosity, such as religious involvement, values, or orientation, not for specific doctrinal beliefs .

• Culture, family, education, life experience, social environment, and personal reflection remain major influences on belief .

So the careful answer is: studies imply that religiosity can be partly heritable, but not that belief is genetically predetermined .