Advertisements
Advertisements
Question
Define evolution. How does it occur?
Solution
Evolution is the formation of more complex organisms from pre-existing simpler organisms over a certain period. Accumulation of variation in genetic material forms the basis of evolutionary processes.
APPEARS IN
RELATED QUESTIONS
Explain the following:- Natural Selection
Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics?
Explain the terms 'analogous organs' and 'homologous organs' with examples.
Which of the following gas was not present in early earth atmosphere?
(a) Ammonia
(b) Oxygen
(c) Hydrogen sulphide
(d) Methane
Complete the statement by choosing correct options from below .
Evolution means -- -- -- --.
Explain the following :
(a) Speciation
(b) Natural Selection
List two differences between acquired traits and inherited traits by giving an example of each.
The first systematic explanation of the concept of evolution was given by ______.
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
The chronological order of human evolution from early to recent stages is ______.
