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प्रश्न
Define Speciation.
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उत्तर
The process of formation of a new species from the pre-existing species is called speciation.
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संबंधित प्रश्न
Struggle between cow and cow to get grass is called ______.
Which of the following represent tall plants and which represent short plants (or dwarf plants)?
(a) Tt
(b) tt
(c) TT
Give reason for your choice (The symbols have their usual meaning).
Which of the following may be used to obtain an F2 generation?
(a) allowing flowers on a parent plant to be self-pollinated
(b) allowing flowers on an F1 plant to be self-pollinated
(c) cross-pollinating an F1 plant with a parent plant
(d) cross-pollinating two parent plants
Select the group which shares the maximum number of common characters.
Name the scientist who gave the theory of evolution.
Name the ancestor of the following :
Broccoli, Kohlrabi, Kale
Define 'speciation'. Explain how speciation occurs.
Define 'natural selection'.
Which of the following statement is incorrect with respect to variations?
(a) all variations in a species have equal chance of survival
(b) change in genetic composition results in variations
(c) selection of variations by environmental factors forms the basis of evolutionary process
(d) variations are the minimum in asexual reproduction
In human males, all the chromosomes are paired perfectly except one. These unpaired chromosomes are ______
(i) Large chromosome
(ii) Small chromosome
(iii) Y chromosome
(iv) X chromosome
