explain any three with an example to support to evidences in factors of evolution
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1. Relationship between organisms
The theory of evolution says that all organisms alive today have originated from a single ancestor. All organisms are made up of cells. All organisms grow, reproduce and multiply.
2. Anatomy and Morphology:
Evolution also is proved by the similarities in the anatomy and morphology of different animals and plants due to the presence of homologous and anologous organs.
a. Homologous organs: These are organs that are similar embryologically but serve different functions in different organisms. This phenomenon is known as homology.
b. Analogous Organs: These organs perform the same function in but develop from different structures in different species.
3. Genetics
The genetic code is made up of nitrogen bases. These base combinations are almost the same in all the organisms. Certain triplets of amino acid sequences also produce the same proteins in different organisms. This genetic code called the ‘universal genetic code” remains identical to a large extent in most organisms proving the possibility of a common ancestry.
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The theory of evolution says that all organisms alive today have originated from a single ancestor. All organisms are made up of cells. All organisms grow, reproduce and multiply.
2. Anatomy and Morphology:
Evolution also is proved by the similarities in the anatomy and morphology of different animals and plants due to the presence of homologous and anologous organs.
a. Homologous organs: These are organs that are similar embryologically but serve different functions in different organisms. This phenomenon is known as homology.
b. Analogous Organs: These organs perform the same function in but develop from different structures in different species.
3. Genetics
The genetic code is made up of nitrogen bases. These base combinations are almost the same in all the organisms. Certain triplets of amino acid sequences also produce the same proteins in different organisms. This genetic code called the ‘universal genetic code” remains identical to a large extent in most organisms proving the possibility of a common ancestry.
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