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प्रश्न
Define 'natural selection'.
उत्तर
Natural selection is the process of evolution of a species in which characteristics that help individual organisms to survive and reproduce are passed on to their offsprings and those characteristics which do not help are not passed.
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संबंधित प्रश्न
Only variations that confer an advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?
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.
What name is given to the sequence of gradual changes over millions of years in which new species are produced?
How are those species which are now 'extinct' studied?
Define 'speciation'. Explain how speciation occurs.
According to the evolutionary theory, the formation of a new species is generally due to ______
One of the following has not been produced from wild cabbage by the process of artificial selection. This one is :
(a) kohlrabi
(b) cabbage
(c) spinach
(d) kale
List any two factors that could lead to speciation.
Define speciation according to A.E. Emerson and explain its types giving suitable examples.
