Genes are the hereditary units governing the biological transmission of traits from parents to offspring in all species.
(Genes; are; the hereditary units governing the biological transmission of traits from parents to offspring in all species) (the hereditary units; governing; the biological transmission of traits from parents to offspring in all species)
Genes the hereditary units
are governing
the hereditary units governing the biological transmission of traits from parents to offspring in all species
the biological transmission of traits from parents to offspring in all species