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Hannah_Voc Review

Biology Vocab Quiz

TermDefinition
Adaptation a change that results in an organism being better suited to its environment.
Adaptive Radiation rapid increase in number of species with a common ancestor
Allele one of two or more forms that a gene could take.
Beak Depth the distance from the top to the bottom of a beak, as shown at right.
Evolution change in the inherited traits of a population of organisms that occurs over many generations.
Extinction No remaining population of a species; Rates can be rapid during times of ecological stress; Often caused by human activity
Fitness a measure of how well an organism can survive and reproduce in a given environment.
Gene a segment of DNA that determines or helps to determine a trait; Genes are located on chromosomes.
Gene Flow movement of genes into/out of a population May have new alleles or existing alleles in different proportions
Gene Pool the total collection of all the different genes, along with their various forms (alleles), present in an interbreeding population of a specific species at any given time
Genetic Drift a mechanism of evolution characterized by random, chance-based fluctuations in allele frequencies within a population over generations
Gradualism slow and steady evolution over a long period of time
Hardy-Weinberg Equation equation that describes the relative frequency of genotypes in a stable population given the proportions of alleles.
Hardy-Weinberg Principle principle stating that the proportions of different alleles and genotypes in a population will remain stable as long as certain conditions are met
Living Diversity the immense variety of life on Earth, encompassing the total variability among living organisms from all sources.
Mutation a change in a gene.
Niche the functional role, position, and space a species occupies within an ecosystem, encompassing all its interactions with biotic and abiotic factors.
Non-random Mating a biological phenomenon where individuals choose mates based on specific phenotypes or genotypes, or mate with close relatives, rather than pairing randomly
Created by: kdwilliams
 

 



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