Speciation
This type of speciation occurs when a population is geographically isolated from its parent population.
What is allopatric speciation?
This system of classification, developed by Carl Linnaeus, uses binomial nomenclature to name species.
What is the Linnaean system?
This type of reproductive barrier occurs before fertilization, preventing mating or fertilization from occurring.
What are prezygotic barriers?
This is the process by which a population becomes geographically separated, leading to the formation of new species.
What is geographic isolation?
This is the minimum number of differences between two populations required to classify them as separate species.
What are significant genetic, morphological, or reproductive differences?
This type of speciation happens without geographical isolation, often due to behavioral or ecological differences.
What is sympatric speciation?
In the Linnaean system, this is the highest taxonomic rank, grouping similar kingdoms.
What is a domain?
This prezygotic barrier occurs when species have different mating seasons or times of day, preventing mating.
What is temporal isolation?
This type of speciation occurs when a population is geographically divided, leading to reproductive isolation and the eventual formation of distinct species.
What is Allopatric speciation?
These are the most commonly used characteristics to define species, which include physical appearance, genetic makeup, and ecological roles.
What are morphological traits, ability to interbreed, molecular features, ecological factors, and evolutionary relationships?
The development of reproductive isolation through the accumulation of genetic differences is key to the formation of this.
What is a new species?
This term refers to the second part of an organism’s scientific name, which identifies its species.
What is the species epithet?
This prezygotic barrier occurs when species have different courtship behaviors that prevent mating.
What is behavioral isolation?
This term describes the increase in the number of chromosomes in an organism, which can lead to speciation, particularly in plants.
What is polyploidy?
This term describes the physical characteristics such as size, shape, and color, which are often used to differentiate species.
What are morphological traits?
This term describes when two populations of the same species evolve into distinct species due to geographic or ecological separation.
What is divergent evolution?
This taxonomic rank is one level below "family" and one level above "species," grouping together organisms that share more specific similarities than a family but are more general than a species.
What is genus?
This postzygotic barrier occurs when hybrid offspring are sterile and unable to reproduce.
What is hybrid sterility?
This form of speciation occurs without geographic barriers, often through mechanisms like polyploidy in plants.
What is sympatric speciation?
This is the concept where two populations can mate and produce fertile offspring under natural conditions, which is critical for defining species.
What is the ability to interbreed?
This phenomenon occurs when two populations of a species become reproductively isolated due to behavioral, temporal, or ecological differences, even if they are not geographically separated.
What is reproductive isolation?
This domain includes all organisms with cells that have a true nucleus, encompassing kingdoms such as Animalia, Plantae, Fungi, and Protista.
What is Eukarya?
This postzygotic barrier occurs when hybrid offspring do not survive to maturity, reducing reproductive success.
What is hybrid inviability?
This process occurs when a single ancestral species rapidly diversifies into a wide variety of forms to fill different ecological niches.
What is adaptive radiation?
This method uses genetic sequences to determine how closely related two populations are, playing a key role in defining species.
What are molecular features?