Q. 154.0( 5 Votes )

How do variations arise in organisms? “Variation is useful for the survival of species.” Justify this statement with the help of an example.

Answer :

Variation arise in an organism during reproduction that is during the DNA copying some error may occur by chance which gives rise to variations, and this is passed down to their offsprings.


Variations can be beneficial or detrimental that is variation is sometimes useful for the survival of the species; this is justified with the following examples:


i. If the temperature of the water increases suddenly, then most of the bacteria living in that water would die. Only a few variances that are resistant to heat would be able to survive. However, if this variance were not there, then the entire species of bacteria would have been destroyed. Thus, this variant help in the survival of species.


Hence if some variations are there, few individuals might survive. Depending on whether the variations are useful to the change in the environment some variants survive whereas others do not.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Introduction to Genetic TermsIntroduction to Genetic TermsIntroduction to Genetic Terms46 mins
NCERT | Heredity and Evolution (Part-1)NCERT | Heredity and Evolution (Part-1)NCERT | Heredity and Evolution (Part-1)37 mins
Quiz | Let's Check Our Understanding on HeredityQuiz | Let's Check Our Understanding on HeredityQuiz | Let's Check Our Understanding on Heredity36 mins
Evolution of HumansEvolution of HumansEvolution of Humans9 mins
Interactive Quiz: Interesting facts on evolution of GeometryInteractive Quiz: Interesting facts on evolution of GeometryInteractive Quiz: Interesting facts on evolution of Geometry42 mins
Idioms and PhrasesIdioms and PhrasesIdioms and Phrases43 mins
Goprep Genius Quiz  | Analogy and ClassificationGoprep Genius Quiz  | Analogy and ClassificationGoprep Genius Quiz | Analogy and Classification48 mins
Acid - Types and NomenclatureAcid - Types and NomenclatureAcid - Types and Nomenclature52 mins
Agriculture and its ImportanceAgriculture and its ImportanceAgriculture and its Importance35 mins
Foundation | Permutation and CombinationFoundation | Permutation and CombinationFoundation | Permutation and Combination45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses