Chemotaxonomy

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Merriam-Webster defines chemotaxonomy as the method of biological classification based on similarities and dissimilarity in the structure of certain compounds among the organisms being classified. Advocates argue that, as proteins are more closely controlled by genes and less subjected to natural selection than the anatomical features, they are more reliable indicators of genetic relationships. The compounds studied most are proteins, amino acids, nucleic acids, peptides etc.

1. common ancestor, which in turn had protoplasm. Its complexity increased due to changes in the mode of life and habitat
   .
2. Nucleic acids:
   strand from another species. If the alleles
   of the strands of any two species are close, then it can be concluded that these two species are more closely related.
3. human being. The complexity in the composition of these enzymes increases from lower to higher organisms but are fundamentally the same. Likewise, carbohydrates are always digested by amylase, and fats by lipase
   .
4. End products of digestion: Irrespective of the type of
   common ancestry
   .
5. bovine thyroid gland, normal metabolism will take place and the tadpole will metamorphose into a frog. As there is a fundamental relationship among these animals, such exchange of hormones or glands
   is possible.
6. Nitrogenous Excretory Products: Mainly three types of nitrogenous waste is excreted by living organisms; ammonia is a characteristics of aquatic life form, urea is formed by the land and water dwellers, uric acid is excreted by terrestrial life forms. A frog, in its tadpole stage excretes ammonia just like a fish. When it turns into an adult frog and moves to land, it excretes urea instead of ammonia. Thus an aquatic ancestry to
   nitrogenous excretory products
   .
7. echinoderms and prochordates, some have PA and others PC. Only a few have both PA and PC. Biochemically, these two groups are related. This is the most basic proof that the first chordate animals should have been derived only from echinoderm-like ancestors
   .
8. life forms
   appeared in the sea, they acquired the composition of the contemporary sea water, and retained it even after their evolution onto land, as it was a favorable trait.
9. lines
   , one leading to marine life and the other to terrestrial life.
10. antibodies in the rabbit's body. The rabbit's blood is then drawn and clotted. The serum separated from the red blood cells
    is called the anti-human serum.

The field of biochemistry has greatly developed since Darwin's time, and this serological study is one of the most recent pieces of evidence of evolution. A number of biochemical products like nucleic acids, enzymes, hormones and phosphagens clearly show the relationship of all life forms. The composition of body fluid has shown that the first life originated in the oceans. The presence of nitrogenous waste products reveal the aquatic ancestry of vertebrates, and the nature of visual pigments points out the fresh water ancestry of land vertebrates. Serological tests indicate relationships within these animal phyla.

Paleontology

When only fragments of fossils, or some

External links

Look up chemotaxonomy in Wiktionary, the free dictionary.

• http://www.merriam-webster.com/dictionary/chemotaxonomy