At the time of origin of life which was not existed in free stage :-
It also occurs in oceans, lakes, rivers, and ice caps in the form of water. Nearly 89 percent of the weight of water is oxygen.
At the time of formulation of theory of natural selection, Darwin was influenced by :-
The cause of mutation is :-
Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
Galopagos island is associated with :-
If an organ is used, it gets developed and if an organ is not used, it gets reduced. It was given by :-
The search of life on other planets or in the space is called as :-
The colleague of Darwin on his ship Beagle was :-
To say that Darwin's journey aboard the Beagle and time spent at sea was not life-changing would be an understatement. In 1831 – at the age of 22 – Charles Darwin was given the opportunity of travelling aboard a survey ship, HMS Beagle, as a naturalist.
The book written by Weisman :-
The book written by Weisman is germ fluid.
The Spark-discharge apparatus to test chemical evolution of life was designed by :-
Swan-necked flask experiment was done by :-
The presence of gill slits in the embryos of all vertebrates supports the theory of :-
Recapitulation theory claims that the development of the individual of every species fully repeats the evolutionary development of that species.
Wings of locust, pigeon & bats are the example of :-
Age of fossils can be detected by :-
Term "evolution" was first used by:-
The factors which causes genetic drift :-
Genetic drift is one of four factors (mutation, migration, genetic drift, and natural selection) causing gene pools to change over time, and genetic drift is at the heart of several recent theories of evolution.