/sci/ - Science & Math

>>8988888
>>8988732
Not always. Some flaws are so minor that they don't really have a strong impact on survival rates compared to other factors.

For example, the nerves that control the vocal chord of the giraffe go all the way down from the brain, into the chest, around the heart, and then back up to the mouth of the giraffe. This long trip serves no purpose and is just a byproduct of the evolution from fish to mammal; in more primitive animals, the nerve was a straight line from the brain to the mouth. Even in humans, the nerve makes an unneeded path around the heart.

A lot of animals also have body parts that serve no purpose at all; they are simply a waste to create and maintain. For example, you probably know of the human appendix. Some other useless parts on a human include the tail bone, the Vomeronasal organ, ear muscles, and a large number of various small muscles on the human body that don't do anything