As geneticists would like you to think, perhaps the mother had the \"bad mother\" gene that caused her pups to be stressful, and then it was passed from generation to generation; it's all determined by genetics.
Sebagai ahli genetik mungkin berpikir: Mungkin si ibu punya \"gen buruk\" yang membuat anak-anaknya menjadi stres, dan kemudian diteruskan turun-temurun; semua ini ditentukan oleh genetik.