Upgrade to remove ads
Terms in this set (34)
The irrevocable loss of a species from Earth.
Remnant or imprint of an ancient organism preserved in rock
Type of natural selection that favors an intermediate trait and selects against extreme traits.
Type of natural selection that favors two extreme traits and selects against an intermediate trait
Type of natural selection where an extreme trait is favored and the other extreme trait is selected against.
Mechanism that drives the evolution of a population so that traits that make an organism more likely to survive and reproduce in an environment are more likely to be passed on
A group of members of the same species living in the same place
Change in allele frequencies that occurs after a few individuals establish a new population.
Method of estimating the age of a rock or fossil by measuring the content and proportions of a radioisotopes
Random changes in a population's gene pool that are not the result of natural selection
Inherited trait that increases an individual's fitness
Severe reduction in population size leading to a loss of genetic diversity in a population in which the number of individuals able to reproduce is limited
Movement of alleles into and out of a population as individuals join and leave, increasing or decreasing genetic variation in the population
Degree to which an organism's traits allow it to survive and reproduce
Process of breeding organisms (by humans) for certain traits
Natural selection based on the fact that individuals with certain traits are more likely to be chosen as mates; traits selected for may seem counterintuitive for survival
Body part that shares a common evolutionary origin with body parts in other organisms but may have a different function (ex: forelimbs in mammals)
Body parts that are similar in form and function function and do not share a common origin (a product of convergent evolution) (ex: wings of a moth and a bird)
Speciation route in which a physical barrier that separates members of a population ends gene flow between them.
Speciation route in which new species evolve from a single ancestral species while inhabiting the same geographic region
Separation of two populations by a physical or behavioral barrier that prevents interbreeding
Organisms that commonly interbreed and produce fertile offspring. Ecological roles and DNA may influence the definition.
Set of all of the alleles for each gene in all of the individuals in a population
The genetic makeup of an organism for a certain trait
The physical manifestation of an organisms genotype
A heritable trait
Different variations of a gene
P2 +2pq+q2 =1
Hardy Weinberg Equation
Two copies of the same allele comprising a genotype
Two different alleles comprising a genotype
Pattern of evolution where genetic changes produce a new species relatively rapidly between long periods of no change
Pattern of evolution in which a new species forms slowly over millions of years
Evolution of similar characteristics in organisms that do not share a common ancestor.
A burst of genetic divergences from a lineage gives rise to many new species in a relatively short amount of time.
YOU MIGHT ALSO LIKE...
Evolution and natural selection
Chapter 13: How Populations Evolve
Gen Bio- Biodiversity/Evolution/Ecology Chapter 13…
OTHER SETS BY THIS CREATOR
Proteins and RNA vocab