Theory Of Evolution|Hardy Weinberg Principle|Gene Flow (जीन पलायन)|Gene Drift (आनुवंशिक विचलन)|Natural Selection|OMR|Summary

Hardy-Weinberg Principle (Factors Affecting Hardy-Weinberg Equilibrium)|Mechanism Of Evolution|Natural Selection|OMR|Evolution - Question Discussion|Summary

(a) State Hardy Weinberg principle. Name any two factors which affect it. (b) Draw a graph to show that natural selection leads to directional change.

(a ) Write the Hardy-Weinberg principle. (b) Explain the three different ways in which natural selection can affect the frequency of a heritable trait in a population shown in the graph given below.

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

Define 'evolution'. Give the principles of Darwin's theory of natural selection. Mention any 'one' objection to it.

Mechanism Of Evolution - Hugo De Varie's Mutation Theory|Experiments Conducted By Hugo De Vries|Conclusion|Salient Features Of Mutation Theory|OMR|Evolution - Hardy-Weinberg Principle|OMR|Summary

Assertion : Hardy-Weinberg principle states that in the absence of disturbing influences, gene frequencies of large populations of sexually reproducing organisms do not change , provided that matings occur at random. Reason : The disturbing influences include mutation, gene flow genetic drift, genetic recombination and natural selection.

Among the five factors that are known to affect Hardy- Weinberg equilibrium, three factors are gene flow, genetic drift and genetic recombination. What are the other two factors. ?