Show:
Earth History
Natural Selection
Variation
Adaptations
Homologies and Vestigials
100
Layers of rock where fossils are
What are Strata?
100
Certain traits are beneficial and those individuals with those traits are able to do this.
What is reproduce more successfully?
100
Mutations
What is change in DNA?
100
These are developmental stages of organisms that show a great deal of similarity
What are embryos?
100
Part of the spinal cord that is vestigial
What is the tailbone?
200
Between 3 and 4 million years ago
What is when the first living thing appeared on Earth?
200
The first source of variation in living things.
What are mutations?
200
When genetic information from parents come together in new ways.
What is recombination?
200
Circular foramen magnum, locking knee joint and non-elongated hip bone.
What are features of bi-pedalism?
200
These are evidence of our evolutionary relationship with fish
What are gill slits?
300
relative dating
What is estimating the age of a fossil based on its position in rock layers?
300
When members of a population are adapted to new environments and form a new group.
What is a new species (or species)
300
We have very little genetic variation from these animals
What are chimpanzees?
300
Water, light, food and places to live
What are things that living things compete for?
300
Similar structures in different species suggest that they came from this
What is a common ancestor?
400
The animal that evolved from a land creature to an aquatic one over millions of years?
What is the whale?
400
The cause of an increase in frequency of certain genes in a population.
What is Natural Selection?
400
There is similarity with this fossil's knee joint and ours.
What is Lucy?
400
The second source of variation and diversity in living things.
What is recombination?
400
A pocket that comes off of the intestine in humans.
What is the appendix?
500
Fossils of rain forest organisms in present day deserts
What is evidence that earth's environments have changed over time?
500
Three things needed for evolution to occur
What are variation, selection and time?
500
This changes over time if one gene is lethal and the other has an advantage
What is gene frequency (or Frequency)?
500
An antibiotic kills most of a population of Bacteria. Those not killed had this adaptation
What is resistance?
500
A butterfly wing and a bat wing
What is non-homologous?