Psychological traits, such as empathy, aggression, and shyness, follow the type of inheritance pattern. Heterozygous. X-linked. Polygenic. Dominant-recessive.

Polygenic inheritance pattern.

Explanation:

A polygenic (multiple gene) inheritance is used to describe, therefore, a type of gene that causes effects not only individually but in their enviroment of a particular phenotype. Traits like empathy, aggression, and shyness, follow this type of pattern; but this term is not only used to describe these psychological traits. For example, given the genes that form type 2 diabetes, this condition is considered to be polygenic as well. Therefore, making it a used term used in every science or otherwise that considers anything to do with genes.

they encountered severe weather for which they were poorly prepared.