Changes

*[[Homology | Anatomical homologies]]- The phenotype of organisms often share similar structure. This structure often doesn't serve a specific design function and is most easily explained by constraints of common descent.  

*[[Homology | Anatomical homologies]]- The phenotype of organisms often share similar structure. This structure often doesn't serve a specific design function and is most easily explained by constraints of common descent.  

*[[Endogenous retrovirus | Endogenous retroviral insertions]] - These are inactivated viral genes that were inserted by ancient [[retrovirus]es. Having the same retrovirus inserted in the same location between two species is best explained by common descent.  

*[[Endogenous retrovirus | Endogenous retroviral insertions]] - These are inactivated viral genes that were inserted by ancient [[retrovirus]]es. Having the same retrovirus inserted in the same location between two species is best explained by common descent.  

*[[Pseudogene]]s - These are genes that no longer code for a protein due to a mutation. Species often share the same pseudogene, with the same inactivating mutation. A famous example of this is the [[L-gulonolactone oxidase]] which synthesizes vitamin c, all simians including humans share this pseudogene but the guinea pig which also has an inactivated L-gulonolactone oxidase gene has a different mutation. This is best explained by common descent.  

*[[Pseudogene]]s - These are genes that no longer code for a protein due to a mutation. Species often share the same pseudogene, with the same inactivating mutation. A famous example of this is the [[L-gulonolactone oxidase]] which synthesizes vitamin c, all simians including humans share this pseudogene but the guinea pig which also has an inactivated L-gulonolactone oxidase gene has a different mutation. This is best explained by common descent.