Question

State the significance of biochemical similarities among diverse organisms in evolution?

Answer 1

Hint: Biochemical evidence for the evolution depends upon the presence in the cells of all or almost all life on Earth with certain enzymes and chemical procedures.

Complete Answer:
- Evolution reflects changes over the coming generations in the heritage features in biological populations. These are the expressions of the genes which are transmitted during replication from parent to descendant. There are many features of mutation, genetic recombination and other causes of genetic variation within a given population.
- Evolution takes place as evolutionary mechanisms such as natural and genetic mutation operate upon this variation, which contribute to certain features being more common or scarce in a population.
- Biochemical similarities indicate proteins and nucleic acids. Many related DNA sequences species are called close relatives or have originated from the same ancestor. Hereditary material such as DNA and RNA bears genetic material from generation to generation. This is recombined during meiosis which induces variation.
- However, these biochemical similarities provide numerous evidence of evolution from common ancestors. Biochemicals which are remarkably similar in shapes and roles in all organisms are one class of biochemical proof of evolution, homologous molecules.
- Cytochrome c is an example of a homologous protein. This protein is present and plays a significant function in cellular respiration in nearly all living cells. Metabolism is another example of biochemistry. The same processes are used in all life forms to trap and refine energy and then to make it protein and amino acids.

Note: Evolution takes place as evolutionary mechanisms such as natural and genetic mutation operate upon this variation, which contributes to certain features being more common or scarce in a population. Metabolism, cytochrome c, DNA, RNA, etc. are those biochemicals that are significant among diverse organisms in evolution.