Advertisements
Advertisements
Question
Explain the following :
(a) Speciation
(b) Natural Selection
Solution
(a) Speciation : The formation of new and distinct species during the course of evolution which is called speciation. Speciation can occur due to geographical barrier or due to morphological changes that it in due to mutations.
(b) Natural selection : Natural selection is a mechanism of evolution in which the organisms most fit to survive thrive while others population create to gross.
APPEARS IN
RELATED QUESTIONS
With the help of suitable examples, explain why certain traits cannot be passed on to the next generation. What are such traits called?
Write the contribution of Charles Darwin in the field of 'evolution.'
How are the areas of study – evolution and classification – interlinked?
Give any two distinctive features of Dryopithecus.
Out of the wing of a bird, wing of an insect and the wing of a bat :
which two are homologous organs?
Which of the following gas was not present in early earth atmosphere?
(a) Ammonia
(b) Oxygen
(c) Hydrogen sulphide
(d) Methane
Name any three types of premating isolating mechanisms.
Name any three types of postmating isolating mechanisms.
Which of the following is the correct pair?
Had Darwin been aware of Mendel’s work, would he been able to explain the origin of variations. Discuss.