DNA molecules are ordered and have special properties of retaining the order [self repairing / self assembling] and replication [production of identical copies]. These properties are suggested to have controlled the process of evolution of genome towards a highly ordered structure from randomly produced natural mutant DNA molecules.
The design and creation of the world’s first vacuum pump [known as Magdeburg hemispheres] by Otto von Guericke, in 1650 begins the history of thermodynamics. However thermodynamics as a modern science started after the publication of a discourse titled “Reflections on the Motive Power of Fire” in the year 1824 by Sadi Carnot who is regarded as the” father of thermodynamics” .
Charles Darwin[1809-1882 ] propounded the theory of evolution which says that all the life on earth developed gradually over millions of years from a few common ancestors.
Sigmund Freud [1856-1939] a physiologist, medical doctor is the father of psychoanalysis and psychology. He originated several concepts such as unconscious mind, infantile sexuality, id, ego, super ego, primary instincts etc. The plant kingdom is out of the arena of psychology as they are supposed not to have a brain.
Deoxyribonucleic acid or DNA is a long polymer chain of sugar and phosphate atoms fixed by units called nucleotides. DNA was first isolated by Swiss physician Friedrich Miescher in the year 1869.
All these subjects are studied independently as specializations. In the year 1927, JC.Bose in his address to thirteenth Indian science congress said “now, full scientific attention has not been given to the power of our will in controlling all bodily functions”. He talked of nervous impulses in plants. Clearly all these subjects are about life forms and their development but are misaligned. One theory does not fit into the other. They are discontinuous, are not complimentary to each other and don’t work in tandem.
Thermodynamics is a subject of interest to all those dealing with energy in particular and to physicists, chemists, engineers and to biologists in general. Psychologists ignored this subject despite the interest shown by Freud.
The second law of thermodynamics is of importance in the context of evolution. The general version of the second law from classical point of view is stated as “The total entropy of any isolated thermodynamic system tends to increase over time, approaching a maximum value.” Entropy is the measure of disorder. What the second law says is that systems show tendency to become disordered left to themselves. This law of physics is special in that it does not hold always, it has exception.
From the stand point of molecular statistics, all states have equal probability. That is an ordered state may result out of a disordered state. This special version of second law is stated  as “the self compressive gas is not absolutely improbable.” A simpler example  is: we have a pack of 52 playing cards. Every time we shuffle and show [say in a second] we see a disordered arrangement. Is an arrangement probable such that all the four suits of the cards show up in seniority? Statistically yes. All arrangements have equal probability. Such an out come is probable once in 10 37 shuffles. This is a rarest of the rare event if realized.
Theory of evolution
Darwin a naturalist studied fossils of extinct animals that were similar to modern species of South America. These studies prompted him to propound the theory of evolution which is based on the mechanism of natural selection. The mechanism of natural selection is two staged,  a species produces variant types,  some of the variants that fit well into the environment survived. That is survival of the fittest. The fittest again produced variant types so that the environment selects the most fittest and thus evolution proceeded. Important point is that the fittest is selected by the environment. The species it self has no roll. The species merely produced variant types randomly. Caution: evolution has directionality  but is not predetermined /preprogrammed. Here,