l allele associated_with DRD4 7-repeat allele
Evidence from:
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Evidence (1 sources)
Differential sensitivity to prevention programming: a dopaminergic polymorphism-enhanced prevention effect on protective parenting and adolescent substance use.
(2014)
PMID:23379386
cited
8.52% carried two copies of 7-repeat alleles; 89.1% carried one allele with 7 or more repeats and one with 6 or fewer repeats
confidence: 0.80