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Segmentation in biology is the division of some animal and plant body plans into a linear series of repetitive segments that may or may not be interconnected to each other. This article focuses on the segmentation of animal body plans, specifically using the examples of the taxa Arthropoda , Chordata , and Annelida .
Earthworms are a classic example of biological homonymous metamery – the property of repeating body segments with distinct regions. In biology, metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, though not all such structures are entirely alike in any single life form because some of them perform special functions. [1]
A segmentation gene is a gene involved in the early developmental stages of pattern formation. It regulates how cells are organized and defines repeated units in the embryo . Segmentation genes have been documented in three taxa: arthropods (i.e. insects and crabs ), [ 2 ] chordates (i.e. mammals and fish ), and annelids (i.e. leeches and ...
Endocrine, nutritional and metabolic diseases (5 C) Eye diseases (16 C, 202 P) F. Foot diseases (1 C, 37 P) G. Conditions diagnosed by stool test (2 C, 41 P)
List of endocrine diseases; List of eponymous diseases; List of eye diseases and disorders; List of intestinal diseases; List of infectious diseases; List of human disease case fatality rates; List of notifiable diseases - diseases that should be reported to public health services, e.g., hospitals. Lists of plant diseases; List of pollution ...
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child.
The nervous system segmentation confers several developmental advantages to the vertebrate body as humans possess a body plan that is bilaterally segmented at the nervous system level. The segmentation is involved at all levels of the human nervous system with increasing level of complexity in the innervation from the brain to limbs. [1]
This is a list of infectious diseases arranged by name, along with the infectious agents that cause them, the vaccines that can prevent or cure them when they exist and their current status. Some on the list are vaccine-preventable diseases .