EASY
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"Survival of the fittest" supports the theory of natural selection.

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Important Questions on Heredity and Evolution

MEDIUM
Science>Biology>Heredity and Evolution>Evolution

Match the Column I with Column II and find the correct answer

  Column - I   Column - II
1 Aneuploidy p Increase in the whole set of chromosomes
2 Monoploidy q Loss or gain of a chromosome
3 Polyploidy r Two sets of chromosome
4 Diploidy s A single set of chromosomes
HARD
Science>Biology>Heredity and Evolution>Evolution
Write salient features of Darwin's theory of Evolution
EASY
Science>Biology>Heredity and Evolution>Evolution
The mode of speciation mediated by geographical isolation is referred as
HARD
Science>Biology>Heredity and Evolution>Evolution
"Survival of the fittest", explain the statement with the help of Darwin's theory.
EASY
Science>Biology>Heredity and Evolution>Evolution
Variations caused by mutation, as proposed by Hugo de Vries, are:
HARD
Science>Biology>Heredity and Evolution>Evolution

According to the Darwinian theory of natural selection, the rate of appearance of new forms is linked to the life cycle or the life span of an organism. Explain with the help of an example.

EASY
Science>Biology>Heredity and Evolution>Evolution
The idea of survival of the fittest was proposed by
MEDIUM
Science>Biology>Heredity and Evolution>Evolution
What would you understand by geographical isolation? Will this be a major factor in the speciation of a self-pollinating plant species? Why or why not?
EASY
Science>Biology>Heredity and Evolution>Evolution
Descent of man & selection in relation to sex was written by ___.
MEDIUM
Science>Biology>Heredity and Evolution>Evolution

Statement I: The existence of deleterious genes within the populations is called genetic load.
Statement II: The changes in the frequency of a gene that occurs merely by chance in small populations is called genetic drift.

The correct option among the following is

EASY
Science>Biology>Heredity and Evolution>Evolution
What is genetic drift? Give one example.
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Science>Biology>Heredity and Evolution>Evolution
Genetic drift
EASY
Science>Biology>Heredity and Evolution>Evolution
What is a gene pool?
MEDIUM
Science>Biology>Heredity and Evolution>Evolution
Transfer of genetic material between populations is best defined as:
HARD
Science>Biology>Heredity and Evolution>Evolution
The book “Process of organic evolution” was written by:
HARD
Science>Biology>Heredity and Evolution>Evolution
Briefly describe Sewall-Wright effect.
MEDIUM
Science>Biology>Heredity and Evolution>Evolution
Differentiate between allopatric and sympatric species.
MEDIUM
Science>Biology>Heredity and Evolution>Evolution
Assertion (A): Founder effect is a type of genetic drift
Reason (R): The change in the frequency of a gene that occurs merely by chance and not by selection, in very large population, is called genetic drift
EASY
Science>Biology>Heredity and Evolution>Evolution
A diploid plant has 14 chromosomes, but its egg cell has 6 chromosomes. Which one of the following is the most likely explanation of this?
HARD
Science>Biology>Heredity and Evolution>Evolution
Natural selection means