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Bio 100 Exam 3 (Jaeger UNLV) | Questions And Answers Latest {} A+ Graded | 100% Verified
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Bio 100 Exam 3 (Jaeger UNLV) | Questions And Answers Latest {} A+ Graded | 100% Verified
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Bio 100 Exam 3 (Jaeger UNLV) | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
Evolution - Any genetically based change of phenotype in a population over successive generations
Common Decent with Modification - species undergo modification through successive generations
changes in species can lead to formation of new, separate species
Species - different kinds of organisms
individuals of the same species share genetic similarity and can potentially interbreed
population - all the individuals of the same species occupying a specific area over a particular time
Fitness - successful reproduction - leaving behind copies of yourself
natural selection - agent of evolution
the process through which a trait or character that confers reproductive advantage to an individual
spreads in a population over successive generations
biotic potential - most populations are capable of producing more offspring then can be supported by
the environment
heritable - pass it onto the next generation
overtime... - the beneficial traits spread through the population
Competition for natural selection - genetic traits that provided an advantage will be spread within a
population, but those tat do not will be lost from the population
What evolves? - populations
, Evolution of acquired characters - overtime, an organism could acquire enough changes that one species
could diverge into two
this branching extended back in time, ancestral species to ancestral species and so on
Five agents of evolution: - natural selection
sexual selection
gene flow
genetic drift
mutation
mutation - a change in DNA sequence
mutation is - the means by which new genetic information is generated...most are detrimental or
harmless, but a rare few are beneficial to an organisms fitness
beneficial mutation - building blocks of evolutionary change
whose theory was "Shorter Neck Giraffes Dieing" - Darwin's Theory
gene flow - the movement of alleles from one population to another by migration
gene flow introduces - 'novel' alleles to a population from some other population
genetic drift - chance alteration of allele frequencies in a population
founder effect - colonization of new habitat y a few individuals that give rise to a new population. note:
founding individuals do not represent the total genetic variation in original population
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