'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes the role of natural selection in evolution.

'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes natural selection as a key mechanism of evolution.

'Survival of the fittest' is a phrase often associated with Charles Darwin's theory of natural selection, emphasizing that those best adapted to their environment are more likely to survive and reproduce.

Lamarckism is the theory that organisms can pass on traits acquired during their lifetime, which has been largely discredited in favor of Darwinian evolution.

Adaptive radiation is the rapid evolution of many species from a common ancestor, often occurring when species colonize new environments with diverse ecological niches.

Genetic drift refers to changes in allele frequencies in a population due to random sampling of organisms, which can lead to significant changes over time, especially in small populations.

Charles Darwin proposed the mechanism of evolution known as Natural Selection, which explains how species adapt and evolve over time based on environmental pressures.

Mutation is the primary source of genetic variation in a population, as it introduces new alleles into the gene pool, which can then be acted upon by natural selection.

Mutations are the primary source of genetic variation, providing the raw material for evolution.

Fossils provide crucial evidence of past life forms and their changes over time, helping scientists understand the process of evolution and the history of life on Earth.

Genetic drift is a mechanism of evolution that leads to random changes in allele frequencies in a population, particularly in small populations.

Mutations provide genetic variation, which is essential for evolution as it introduces new traits that may be subject to natural selection.

The fossil record is significant because it provides a chronological order of species appearance, helping to trace the evolutionary history of life on Earth.

Adaptive radiation is the evolutionary process where one ancestral species diversifies into multiple species to adapt to various environments.

Speciation is the process through which new species arise from existing species due to evolutionary changes.

Speciation is the evolutionary process by which new biological species arise.

Mutation refers to random changes in DNA that can lead to genetic variation within a population, which is a key factor in evolution.

Convergent evolution occurs when unrelated organisms evolve similar traits due to similar environmental pressures.

Adaptive radiation refers to the rapid evolution of many species from a common ancestor, often in response to new environmental opportunities.

Genetic drift refers to random changes in allele frequencies in a population, often having a more significant effect in small populations.

'Survival of the fittest' refers to the idea that those individuals best adapted to their environment are more likely to survive and reproduce.

Adaptive radiation refers to the rapid evolution of many species from a common ancestor, often in response to new environmental opportunities.

In an evolutionary context, 'fitness' refers to an organism's reproductive success and its ability to pass on its genes to the next generation.

The Modern Synthesis integrates natural selection with Mendelian genetics, providing a comprehensive explanation of evolution.

Genetic Drift is a mechanism of evolution that involves random changes in allele frequencies, particularly in small populations.

Gene flow is the mechanism of evolution that involves the transfer of genetic material between populations through migration.

All of the options listed (natural selection, gene flow, and genetic drift) are mechanisms of microevolution, which refers to small-scale evolutionary changes within a population.

Both mutation and gene flow contribute to genetic variation in a population, providing the raw material for evolution.

All of the options listed (mutation, gene flow, and sexual reproduction) are sources of genetic variation in populations.

The human appendix is considered a vestigial structure, as it has lost its original function over the course of evolution.