You don't think you're mixing up "heritable" with "genetic" here? In my family, liking the Yankees is highly heritable across generations, but my grandfather would've laughed in your face if you claimed it was genetic.
>You don't think you're mixing up "heritable" with "genetic" here?
"Heritable" in this context is a term of art. It is a statistic (H squared) that describes the amount of a phenotype that is transmitted from generation to generation. This value broadly describes the amount of a phenotype which can be ascribed to genetics compared to environment without linking it to any known genes or genomic elements. It is a classical technique that was primarily used before we were able to sequence DNA. This is usually figured out by using "twin studies" which are able to quantify inheritance by comparing two individuals with the same genetics.
