Study

Biological Evidence of Evolution

  •   0%
  •  0     0     0

      Back   Restart
  • the study of similarities and differences among structures (body parts) in organisms
    comparative anatomy
  • birds, reptiles, fish, and humans all have pharyngeal pouches as embryos. What does this tell us about these species?
    they are related (have a common ancestor)
  • Scientists find a fossil and find it is 60 million years old. What type of dating are they using?
    absolute-age dating
  • Species that are related share a _______________ ancestor.
    common
  • What are variations caused by?
    mutations in DNA
  • Scientists find the trail of a dinosaur that dragged its tail when it walked. What type of fossil have they found?
    trace fossil
  • Long necks in giraffes are an example of what type of adaptation?
    structural
  • Ability to decrease their body temperature (in bats) is an example of what type of adaptation?
    functional
  • A whale fin and a human arm are examples of what type of structures?
    homologous structures
  • An insect wing and a bird wing are an example of what type of structures?
    analogous structures
  • Migrating, in birds, is an example of what type of adaptation?
    behavioral
  • Which structures (homologous or analogous) show us that species are not related?
    analogous
  • Which structures (homologous or analogous) show us that species are related?
    homologous
  • A scientist found a fossil near the water, its bones had been replaced by minerals. What type of fossil was found?
    mineralized fossil (mineralization)
  • the study of gene structure and function
    molecular biology
  • What is Charles Darwin's theory that organisms change slowly over time?
    theory of natural selection
  • body parts of organisms that are similar in structure but have a different function are called....
    homologous structures
  • The Carbon outline of a plant (which was squeezed by rocks over millions of years) was found. How was this plant fossilized?
    carbonization
  • body parts of different species that have the same function, but not the same structure
    analogous structures
  • A whale pelvis and your appendix are examples of what type of structures?
    vestigial structures
  • body parts in an organism that no longer have a function (like your apendix)
    vestigial structure
  • When does a variation become an adaptation?
    when it helps an organisms to live longer and reproduce more
  • the study of embryo development from fertilization to birth is called....
    embryology
  • What are variations that cause an organism to live longer and reproduce more?
    adaptations
    • Your experience on this site will be improved by allowing cookies.