74 public questions tagged with this topic.
Directional selection favors traits that improve survival, such as camouflage, which helps organisms avoid predation.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Thomas Malthus's work on population growth and resource limitation influenced Darwin's concept of natural selection.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Alfred Wallace independently arrived at the theory of natural selection while working in the Malay Archipelago.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Disruptive selection favors individuals with extreme traits, leading to a bimodal distribution of traits in a population.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Darwin considered reproductive success as the measure of fitness, where individuals producing more offspring are considered more fit.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Natural selection favors individuals with advantageous traits, allowing them to survive and reproduce.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
Natural selection suggests that individuals with favorable traits are more likely to survive and reproduce, contributing to evolutionary changes.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
Gradualism involves the slow and steady change of species over time through natural selection.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
The universal genetic code in all living organisms supports the concept of common ancestry.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Adaptive Radiation and Biological Evolution
Anthropogenic evolution is caused by human activities such as the overuse of pesticides, leading to resistance in insect populations.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Adaptive Radiation and Biological Evolution
Speciation occurs when reproductive isolation leads to the formation of new species over time.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Adaptive Radiation and Biological Evolution
Predation on white moths increased due to pollution darkening tree trunks, favoring melanic moths' survival through camouflage.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
