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प्रश्न
Define the following term:
Speciation
Define the term speciation.
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उत्तर
The origin of new species by gradual modification is called speciation.
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संबंधित प्रश्न
How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?
All organisms produce more young ones. Comment
Given alongside are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.

Answer the following:
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- Give the common name and the scientific name of the insect involved in this phenomenon.
- Briefly mention why the changes shown in the two figures appeared.
- The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
- Name and explain the said theory.
- Give the name of the scientist who gave this theory.
What are objections raised against Darwin's theory?
Identify the two organisms which are now extinct and are studied from their fossils.
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What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor?
According to Darwin, two different areas within a continent have different species because they have different:
Species occurring in the different geographical areas are called as ______.
The famous book "The Origin of Species" was written by ______.
