:::That is true. However, many vestigial structures are greatly reduced in size such as the coccyx and appendix such that their impact on resource usage is negligible in comparison to other factors, even random ones. This makes their impact on reproductive fitness essentially neutral. Consider the appendix, a thin piece of tissue about four inches long, the resources that go in to creating and maintaining such a structure are not likely to have any effect on the number of successful matings a person has. Also consider that the genes responsible for making a vestigial structure may be closely linked genetically (or even share some of the same genes) with the genes that are responsible for making other structures that are still required in humans. This could make it very difficult to remove the genes responsible for the vestigial structure without disturbing those that are still needed. [[User:GodWarrior|GodWarrior]] 09:50, 25 May 2007 (EDT) | :::That is true. However, many vestigial structures are greatly reduced in size such as the coccyx and appendix such that their impact on resource usage is negligible in comparison to other factors, even random ones. This makes their impact on reproductive fitness essentially neutral. Consider the appendix, a thin piece of tissue about four inches long, the resources that go in to creating and maintaining such a structure are not likely to have any effect on the number of successful matings a person has. Also consider that the genes responsible for making a vestigial structure may be closely linked genetically (or even share some of the same genes) with the genes that are responsible for making other structures that are still required in humans. This could make it very difficult to remove the genes responsible for the vestigial structure without disturbing those that are still needed. [[User:GodWarrior|GodWarrior]] 09:50, 25 May 2007 (EDT) |