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प्रश्न
Define the term gene flow.
उत्तर
Gene flow is the movement of genes into or out of a population. Gene movement may be in the form of migration of organism, or gametes or segments of DNA Gene flow also alters gene frequency, causing evolutionary change.
संबंधित प्रश्न
Give any ‘two’ factors responsible for genetic variation.
Overproduction is the principle of
(A) Lamarckism
(B) Theory of organic evolution
(C) Panspermia theory
(D) Modern theory of evolution
State the following:
Theory of recapitulation
Define Population.
What is Genetic variations?
Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.
Write down the three main concepts of the modern synthetic theory.
The total genetic information encoded in sum total of genes in a Mendelian population is called ______.
All are post zygotic barriers, EXCEPT
Which of the following is TRUE for zygote mortality?
Which of the following is TRUE for genetic drift?
The structural, morphological change chromosome due to rearrangement is called ____________.
______ is the separation of the population of a particular species into smaller units which prevents interbreeding between them.
Identify the INCORRECT statement.
Industrial melanism is one of the best example for ______.
Which animal was very conspicuously visible on the tree trunks after the industrial revolution (1845) in Great Britain?
Which of the following is a pre-mating mechanism of isolation?
What is Genetic recombination?
