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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
Explain the phenomenon that is well represented by Darwin's finches other than natural selection.
All organisms produce more young ones. Comment
Give the scientific name of the organism which is cited as the classical example of "natural selection".
Given below are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.
Answer the following:
- What name has been given to this phenomenon?
- 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.
State Darwin’s theory of evolution.
In which book Darwin had published his theory of Natural selection?
What are objections raised against Darwin's theory?
The theory of natural selection for evolution was proposed by ______.
A basket of vegetables contains carrot, potato, radish and tomato.
Which of them represent the correct homologous structures?
Distinguish between directional, stabilizing and disruptive selection.
