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... they never happen to use to its best function. It is still there, grown fairly small in size due to its rare use, which will now act as a decoration of whale's body. (CQ 748) Snakes have front and rare legs that have shrunken into their own body as it hindered while crawling. The bones of these legs are still in the ... ...
... is natural selection arising through preference by one sex for certain characteristics in individuals of the other sex. Sexual selection is liable for survival. One example would be when peacocks tail are attracting other peacocks based on the coloring and patterns in their tails. In order for the traits to pass on, reproduction must occur. The outlook of an organism determines ... ...
... it correct. Darwin observed that wild animals and plants showed variations just as domesticated animals and plants did. He filled his notebooks with records of height, weight, color, claw size, tail length, and other characteristics among members of the same species. He also observed that high birthrates and a shortage of life's necessities forced organisms into a constant "struggle for existence", both against ... ...
... , well developed and functional in the ancestor. 1. Caudal vertebrae - four pieces of fused bones located on the distal end of the spine. This is presumed to be remnants of the tail well developed in the ancestor of all vertebrates. 2. Appendix - a vermiform pouch connected to the bottom of the large intestine. It has no known function to us and can be removed ... ...
... their attractiveness to the opposite sex. Sexual selection has been shown to be an important factor when explaining evolution with many examples in nature such as that of the peacock's tail. Altruism could be another example of something that appears to be more of a hindrance in survival terms but is actually beneficial due to the increased chance of being sexually successful ... ...
