Front

What are homologous structures?

Back

Homologous structures are anatomical features in different species that share a common ancestry, indicating evolutionary relationships. For example, the wing of a bird and the forelimb of a horse are homologous structures.

Front

What does natural selection favor?

Back

Natural selection favors heritable features that make organisms better suited to survive and reproduce in their environment.

Front

What is the origin of mammals?

Back

Mammals first originated in the ocean, as evidenced by the evolutionary history of whales and humans.

Front

How do mutations occur?

Back

Mutations are random changes in the DNA sequence that can lead to variations in traits among organisms.

Front

What is the role of environmental pressure in evolution?

Back

Environmental pressure can influence the rate of mutations and the process of natural selection, leading to adaptations in species.

Front

What is a vestigial structure?

Back

A vestigial structure is a body part that has lost its original function through evolution, such as the human appendix.

Front

How does evolution explain the diversity of life?

Back

Evolution explains the diversity of life through processes like natural selection, genetic drift, and mutations, leading to adaptations and speciation.

Front

What is the significance of fossil records?

Back

Fossil records provide evidence of past life forms and their evolutionary changes over time, helping to trace the history of species.

Front

What is the difference between artificial selection and natural selection?

Back

Artificial selection is the process by which humans breed specific traits in organisms, while natural selection occurs without human intervention, based on survival and reproduction.

Front

What is speciation?

Back

Speciation is the evolutionary process by which populations evolve to become distinct species, often due to geographic isolation or environmental changes.