156 public questions tagged with this topic.
Lamarck's theory of inheritance of acquired characteristics has been rejected in favor of Darwin's theory of natural selection.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
The Hardy-Weinberg Principle states that allele frequencies remain stable unless affected by evolutionary forces like mutation or selection.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Lungs allowed amphibians to breathe on land, contributing to their survival in terrestrial environments.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
The bottleneck effect is an example of genetic drift, where a population's size is drastically reduced, altering gene frequencies.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
A small population size disrupts Hardy-Weinberg equilibrium due to genetic drift, which is significant in small populations.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
Forelimbs in whales, bats, and humans are homologous organs, indicating common ancestry despite different functions.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Coelacanth is considered a living fossil, showing little evolutionary change over millions of years.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Wings of butterfly and bird are analogous structures, performing similar functions but having different evolutionary origins.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Archaeopteryx is a transitional fossil that shows features of both reptiles (teeth and tail) and birds (feathers).
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Chemical evolution led to the formation of the first cellular life forms from non-living organic molecules.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Stabilizing selection favors intermediate traits, reducing variation and maintaining the status quo in a population.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Amphibians evolved from lobefin fishes, which had strong fins that allowed them to move on land.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
