Final answer:
Genes for new life forms come from the process of evolution by natural selection. All life on Earth is descended from a common ancestor, and genetic variations among species show their relationship. The genetic code is fundamental to the development of new life forms.
Step-by-step explanation:
The genes for new life forms come from the process of evolution by natural selection. Through the study of genetics and genomics, scientists have determined that all life on Earth is descended from a common ancestor. Genetic variations among species indicate how closely different species are related and allow scientists to construct the "tree of life." The genetic code, which is shared by all life on Earth, plays a crucial role in the development of new life forms.1