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Unit 7 -Evolution Keystone Vocabulary Review

Quiz by Richelle Gibson

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17 questions
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  • Q1
    The measure of the relative frequency of an allele at a genetic locus in a population; expressed as a proportion or percentage
    Alelle Frequency
  • Q2
    A physical structure, present in multiple species, that is similar in function but different in form and inheritance
    Analogous Structure
  • Q3
    When individuals or groups of organisms compete for similar resources such as territory, mates, water, and food within the same environment
  • Q4
    A theorized process in which early eukaryotic cells were formed from simpler prokaryotes
  • Q5
    A process in which a new species develops from a preexisting species (biological evolution or macroeveolution); a change in the allele frequencies of a population of organisms from generation to generation (genetic evolution or microevolution)
  • Q6
    A term that typically describes a species that no longer has any known living individuals
  • Q7
    The preserved remains or traces of organism that once roamed Earth
  • Q8
    A decrease in genetic variation caused by the formation of a new population by a small number of individuals from a larger population
    Founder Effect
  • Q9
    A change in the allele frequency of a population as a result of chance events rather than natural selection
    Genetic Drift
  • Q10
    A proposed explanation in evolutionary biology stating that new species arise from the result of slight modifications (mutations and their resulting phenotypes) over many generations
  • Q11
    A physical characteristic in different organisms that is similar because it was inherited from a common ancestor
    Homologous Structure
  • Q12
    The permanent movement of genes into or out of a population resulting in the change in allele frequencies
  • Q13
    A process in nature in which organisms possessing certain inherited traits are better able to survive and reproduce compared to others of their species
    Natural Selection
  • Q14
    A proposed explanation in evolutionary biology stating that species are generally stable over long period of time. Occasionally there are rapid changes that affect some species which can quickly result in a new species
    Punctuated Equilibrium
  • Q15
    A process typically cause by genetic isolation from a main population resulting in a new genetically distinct species

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