1) Polar bears have thick white fur to keep them warm and to blend in with the snow and ice. Thick white fur is a/an a) mutation b) allele c) vestigial structure d) adaptation 2) What animal feature did Charles Darwin focus on while working in the Galapagos Islands? a) fee shape b) beak shape c) eye color d) wing span 3) Which choice below is an example of a vestigial structure that humans have? a) brown hair color b) Rr c) blue eyes d) a tail bone 4) A historical sequence of life indicated by fossils found on Earth makes up the? a) fossil record b) geological time scale c) PH scale d) atomic model 5) Alligators often lay two hundred eggs! But only a few will live to be adults. This is called? a) overproduction b) evolution c) speciation d) geographical isolation 6) Two populations like tigers and lions have become so different, they are now different species! Some differences are caused by barriers( geographic isolation, temporal isolation, etc.) a) selective breeding b) adaptation c) speciation d) Precambrian 7) New developing individuals that demonstrate or explain common ancestry based on similar features. a) extinction b) homologous structure c) embryological structure  d) adaptation  8) Similar structures that related species have inherited from a common ancestor. a) speciation b) analogous structure  c) homologous structure d) selective breeding 9) Features in different species have similar functions but the internal structures are different. a) analogous structure b) genetic variation c) homologous structure d) speciation 10) Which action demonstrates Natural Selection? a) Limit the number of trees in a location b) All finches can interbred because of their habitat. c) Peppered moths develop similar characteristics in their gene pool. d) A farmer sprays insecticide on plants. A small group of plants survive and pass the trait to their offspring.

Natural selection

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