Segmentation also called as metamerism, is the condition the body of the organism is composed of linear series of repeating parts of segments. Segmentation starts during the embryonic development of organisms. Segmentation is seen in three animal phyla that are Annelida, Arthropoda and Vertebrates.
Most bacteria are eventually able to change their genetic makeup in order to become resistant to antibiotics. Therefore, the antibiotics no longer have an effect on the infections.
