Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Three-stage Origin of Life as a Result of Directional Darwinian
  Evolution   The original hypothesis about Three-stage origin of life (TOL) on the Earth
is developed and discussed. The role of the temperature factor in life origin
is considered. It is supposed, that three stages of abiogenesis (DNA world, RNA
world and the Protein world) consistently followed each other during Darwinian
evolution. At the same time, the natural directional selection of the most
stable macromolecules and effective catalytic reactions took place. The
direction of this selection is related to action of the principle of
{\guillemotleft}Increasing Independence from the Environment{\guillemotright}
(IIE) and is caused by temperature evolution of the atmosphere of the Earth.
The direction of Anagenesis and inevitability of occurrence of genetic
mechanisms is discussed.

24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th