Question

What do biochemical similarities tell us about evolution?

Answer 1

The similarities among biochemicalls tell about the theory of evolution.

Explanation:

There are large number of similar biochemicals, which are found in different organisms and perform same functions. It reminds and proves the theory of evolutuion. We can cite the example of DNA, which is genetic material from the virus (except RNA virus) to higher organisms. The structure of DNA is similar in all. Thank you

Answer 2

Living organisms of all shapes and sizes use nucleic acids and proteins respectively for genetic inheritance and genetic expression. Moreover the genetic language is universal. All this points to a common ancestry .

Explanation:

Biochemical similarity is an evidence of evolution of varied forms of life from a very distant common ancestor.

I would like to quote from chapter 3, of Richard Dawkin's The Selfish Gene:

An octopus is nothing like a mouse, and both are quite different from an oak tree. Yet in their fundamental chemistry they are rather uniform, and, in particular, the replicators that they bear, the genes, are basically the same kind of molecule in all of us- from bacteria to elephants.