LIFE SCIENCE

Detailed explanation-1: -A classic example of biochemical evidence for evolution is the variance of the ubiquitous (i.e. all living organisms have it, because it performs very basic life functions) protein Cytochrome c in living cells.

Detailed explanation-2: -With functioning genes, one possible explanation for the relative similarity between genes from different organisms is that their ways of life are similar-for example, the genes from a horse and a zebra could be more similar because of their similar habitats and behaviors than the genes from a horse and a tiger.

Detailed explanation-3: -Organisms that seem fairly similar on the basis of comparative anatomy, show more genes in common than organisms that aren’t much alike. For example, 96% of the genes in humans and chimpanzees are identical. That two species and their common ancestor have similar DNA is strong evidence supporting evolution.

Detailed explanation-4: -DNA and RNA are the mechanisms for inheritance and gene activity in all living organisms. The structure of the genetic code is almost identical in all living things. This uniformity in biochemical organization underlies the diversity of living things and points to evolutionary relationships.