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प्रश्न
Very short answer question.
Define Organic evolution.
उत्तर
Organic evolution can be defined as slow, gradual, continuous and irreversible changes through which the present-day complex forms of the life developed (or evolved) from their simple pre-existing forms.
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संबंधित प्रश्न
Explain the concept ‘survival of the fittest’.
According to de-Vries what is saltation?
How are the areas of study – evolution and classification – interlinked?
What is meant by acquired and inherited traits? Explain with one example each.
According to scientists, aves have evolved from :
(a) mammals
(b) amphibians
(c) reptiles
(d) arthropods
Short answer question.
Draw a graph to show that natural selection leads to disruptive change.
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
____________ results in variation in gene frequencies within population by chance rather than by natural selection.
Evolution occurs as a result of mutations in ______.
Variations during mutations of meiotic recombinations are ______.
