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5 Written questions

5 Matching questions

  1. microevolution
  2. chromosomes
  3. parapatric speciation
  4. polygenic
  5. what's a nucleotide composed of?
  1. a a phosphate-sugar base
  2. b evolution of populations within a species
  3. c carries genes and appears during cell division
  4. d many genes?
  5. e two-step process in speciation where selection causes the differentiation of geographically separate, isolated populations of a species and the populations become reproductively isolated as well

5 Multiple choice questions

  1. the transfer of alleles of genes from one population to another
  2. occurs when a new colony is started by a few peope from the original population. Not much diversity, usually mutations.
  3. refers to cells that have pairs of homologous chromosomes, where one chromosome of each pair is inherited from each parent. All primates are diploid
  4. driving force behind sympatric speciation extreme values for a trait are favored over intermediate values. E.g.: large nose rather than medium sized nose
  5. structural similarities derived from two species with independent ancestors. Eg. a bat's wing and a human's hands

5 True/False questions

  1. allopatric speciationa hypothesis that speciation can result from selective pressures favoring different phenotypes within a population without geographic isolation as a factor


  2. anagenesiswhere two somewhat related species eventually form a new species


  3. stabilizing selectionselection pressuresd that favor average phenotypes. Stabilizing sleection reduces the amount of variation in the population but doesn't alter the mean value of the trait.


  4. macroevolutionevolution of populations within a species


  5. adaptationa spontaneous change in the chemical structure of DNA