LIFE SCIENCE

Detailed explanation-1: -Homologous genes Biologists often compare the sequences of related genes found in different species (often called homologous or orthologous genes) to figure out how those species are evolutionarily related to one another.

Detailed explanation-2: –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.

Detailed explanation-3: -Explanation: Biochemical similarity is an evidence of evolution of varied forms of life from a very distant common ancestor.

Detailed explanation-4: -One class of biochemical evidence of evolution, homologous molecules, is biochemicals that are very similar in structure and function in all organisms. An example of a homologous protein is cytochrome c. This protein is found in almost all living cells and plays a key role in cellular respiration.