The chemical evolution is the formation of complex organic molecules from simpler inorganic molecules through chemical reactions in the oceans during the early history of the Earth. It is the first step in the development of life on this planet.
The concept of chemical evolution is based on:
Held on 30 Apr 2007 · Verified 9 Jul 2026.
interaction of water, air and clay under intense heat
effect of solar radiation on chemicals
possible origin of life by combination of under suitable environmental conditions
crystallization of chemicals.
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Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
Which evolutionary phenomenon is depicted by the sketch given in figure? 
Which one of the following factors will not affect the Hardy-Weinberg equilibrium?
What is the correct order (old to recent) of periods in Paleozoic era?
Match List-I with List-II: $\begin{array}{|l|l|l|l|}\hline & \text{List I} & & \text{List II} \\\hline A. & \text{Gene pool} & I. & \text{Stable within a generation} \\\hline B. & \text{Genetic drift} & II. & \text{Change in gene frequency by chance} \\\hline C. & \text{Gene flow} & III. & \text{Transfer of genes into or out of population} \\\hline D & \text{Gene frequency} & IV. & \text{Total number of genes and their alleles} \\\hline \end{array}$ Chose the correct answer from the option given below:
Work through every NEET UG Evolution PYQ, year by year.