Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/22

Click to flip

22 Cards in this Set

  • Front
  • Back
Fossils
remains of life from an earlier time
Homo sapiens
wise human
Species
a group of organism that look alike and can reproduce among themselves
Lamarck's explanation of evolution
evolution as a result of acquired characteristics
homologous structures
body parts that are similar in origin and structure
vestigial structures
body parts that are reduced in size with no apparent function
radiometric dating
telling age by amount of change in a radioactive element
natural selection
survival of the fittest
variation
a trait that makes an individual different from other members of its species
embryology
study of the development of the embryos of organisms
relative dating
estimate ages of fossils from sedimentary rocks
gradualism
evolution as a "slow change" of one species to another
evolution
change in hereditary features over time
punctuated equilibrium
"rapid" evolution with few intermediate forms
hominid
body part similar in origin and structure
Homo habilis
know as the 'handy man' because of simple stone tools found near the fossil
Australopithecus
fossil characterized by a small brain cavity but humanlike jaw and teeth -- earliest know hominid
Cro-Magnon
lived in art-decorated caves and their dead
Neatherthal
lived in family groups in caves and hunted with well-made stone tools
adaptation
any variation that makes an organism better suited to its environment
Primates
opposable thumb
larger brain
a characteristic that separates hominid from apes