Hello Ousama,,
yes of course, humans of all ages and even animals react in the same bio-logical ways.Regarding hereditary issues there are ways to explain them, too, by trauma being transferred through generations. There has actually science been done on this. Although not every little reaction and tissue change is based on trauma, trauma and significant experiences influence our associations and beliefs to which we respond on all levels. Here is an article about transgenerational trauma: [https://www.psychologytoday.com/us/blog/the-flourishing-family/202107/breaking-the-chains-generational-trauma|Breaking the Chains of Generational Trauma ]