This text explores the limitations of the modern conceptualization of genetics, specifically critiquing the prevailing idea of genes as all-powerful entities that dictate all aspects of life. This concept of genetic determinism has permeated public consciousness to a degree that far exceeds the scientific boundaries of genetics and biology. The author argues that this focus overlooks the crucial role of the organism's reactivity to genetic information. It is essential to recognize that the living body is not merely a passive recipient or a mechanical collection of individual parts. Instead, the organism must be understood as a holistic subject that actively responds to its genetic makeup. By emphasizing the "whole body" as an integrated entity rather than a puzzle of components, the text challenges the reductionist view of causality in life sciences. The abstract highlights the need to restore the importance of the subject's agency and its capacity for reaction, advocating for a biological perspective that respects the integrity and active participation of the living organism in its own existence and development.