Evolution: The process by which populations of organisms change over generations through the inheritance of traits leading to the development of new species.
Gene Pool: The complete set of unique alleles in a population at a specific time representing the genetic diversity of that population.
Fossil Record: The collection of all known fossils and their placement in chronological order providing evidence of the history of life on Earth.
Embryology: The study of the development of embryos across different species highlighting similarities and differences in their early stages.
Evolution
The process by which populations of organisms change over generations through the inheritance of traits, leading to the development of new species
Gene Pool
The complete set of unique alleles in a population at a specific time, representing the genetic diversity of that population
Fossil Record
The collection of all known fossils and their placement in chronological order, providing evidence of the history of life on Earth
Embryology
The study of the development of embryos across different species, highlighting similarities and differences in their early stages
Homologous Structures
Structures in different species that are similar in form and function, indicating a common evolutionary origin
Endosymbiosis
The theory that explains the origin of eukaryotic cells through the symbiotic relationship between different prokaryotic cells
Analogous Structures
Structures in different species that have similar functions but different evolutionary origins
Vestigial Structures
Structures in organisms that have lost most or all of their ancestral function, providing evidence of evolutionary change
Descent with Modification
The concept that species originate as modified descendants of other species, as proposed by evolutionary theory
Natural Selection
The process by which certain heritable traits become more common in a population due to their advantage in survival and reproduction
Charles Darwin
A British naturalist who proposed the theory of evolution by natural selection in his work "The Origin of Species"
Heritable Variations
Differences in traits that can be passed down from one generation to the next within a population
Common Ancestor
An ancestral species from which different species have evolved over time
Population Evolution
The change in characteristics of a population over generations, driven by natural selection and other evolutionary mechanisms
Fossils
Physical evidence of an organism that lived long ago
Fossil Record
The collection of fossils that represents the preserved history of living things on earth
Relative Dating
Estimates the time during which an organism lived by comparing the placement of fossils of that organism with the placement of fossils in other rock layers
Radiometric Dating
Uses the natural decay rate of unstable isotopes to calculate the age of a fossil
Comparative Embryology
The comparison of embryo development across species
The Theory of Endosymbiosis Proposes
The mitochondria found in eukaryotic cells descended from ancestors of infection-causing bacteria. Similarly, chloroplasts are considered descendants of cyanobacteria
Homologous Structures
Are formed in similar ways during embryonic development and share similar arrangements. However, they have obviously different forms and distinct functions
Analogous Structures
Unrelated animals that have body parts with similar functions but are different in structure and form
Convergent Evolution
The process by which organisms independently evolve similar traits as a result of adapting to similar environments