In this essay, the two topics I will cover will include information on the use of organisms for genetic purposes, and that is stem cell therapy which involves the use of stem cells to prevent or treat disease or other conditions and, xenotransplantation which is a transplant of living cells, tissues or organs from an animal to a human being. In this essay, these topics will show us how essential xenotransplantation is and how stem cells are used to treat injuries and diseases and why they are the subject of such dynamic debate. There will be an analysis of existing and emerging genetic technologies and their relevant ethical considerations. .The process of transplanting cells, tissues or organs from different species into a human being is called xenotransplantation. It is divided into four different types of xenotransplantations: - Solid organ xenotransplantation, cellular or tissue xenotransplantations, external therapies and human or animal hybrids. Getting rid of organs like a kidney, heart, lungs or liver from a donor animal and transplanting it into a human is done through the solid organ process. Xenograft. Cells or tissues from a donor animal implanted directly into a recipient's organ are transplanted by cell or tissue xenotransplantation. Filtration of human blood cells outside the body through an animal organ or cells into an external device is achieved by external therapies. When human cells are grown in culture with other species that are transplanted into human patients, it is called a human or animal hybrid. Stem cell therapy is a plan that introduces new adult stem cells into injured tissues to treat diseases or other conditions. In stem cell therapy, the stem cell is grown by research...... middle of article ...... seems more reliable and beneficial than xenotransplantation from research. Until recently, scientists worked primarily with two types of animal and human stem cells: embryonic stem cells and “somatic” or “adult” non-embryonic stem cells. Embryonic stem cells: primitive (undifferentiated) cells derived from a 5-day-old preimplantation embryo, capable of dividing without differentiating for an extended period of time in culture and known to develop into cells and tissues of all three primary germ layers. Somatic (adult) ) Stem cells: relatively rare undifferentiated cell, found in many differentiated organs and tissues, with limited capacity for both self-renewal (in the laboratory) and differentiation. These cells vary in their capacity for differentiation, but this is generally limited to the cell types of the organ of origin. This is an active area of ​​investigation.