Name the Line of evidence
A link between dinosaurs and birds is found by unearthing remnants of the intermediate species archaeopteryx.
Fossil record
This is a feature that no longer serves a purpose, but is left over from an organism's evolutionary past.
Vestigial trait
A group of organisms that share a common trait which they inherited from a common ancestor. (hint: this is where the name "cladograms" comes from)
Clade
The islands where Darwin observed tortoises and finches
Galapagos
A certain gene is 99.9% identical between humans and chimpanzees, but only 78% identical between humans and frogs.
DNA evidence
This is a feature that is shared by different species due to a common ancestor.
Homologous Feature
An organism that does not have a characteristics that all other organisms in the cladogram share.
Outgroup
Goosebumps are an example of what type of feature on humans
vestigial
Whales still have finger and hand bones within their flippers and even have a pelvic bone- evidence of the evolutionary past.
Comparative anatomy- vestigial features.
This is a feature that two species share due to similar selective pressures, but that is NOT inherited from a common ancestor.
Analogous feature
The idea that the simplest explanation is probably the best.
Parsimony (or Ockham's Razor)
An explanation for a natural phenomenon that has been tested and corroborated in accordance with the scientific method.
Scientific Theory
Very early in development, humans have gill slits and a tail like our ancient ancestors did.
Comparative anatomy- embryonic development.
The wings of a bat and the wings of a butterfly are an example of this feature
Analogous
In the cladogram shown on the board, list all organisms that have the trait "limbs"
Turtle, horse, monkey, humans
The names of the two scientists who developed the theory of evolution by natural selection (last names only is OK)
Darwin and Wallace
A human being and an oak tree both contain cells with mitochondria that carry out cellular respiration.
Homologous feature.
The opposable thumbs of a chimpanzee and those of a human are an example of this kind of feature
Homologous
Make a cladogram for the data set on the board. Be sure it is the the most parsimonious diagram that can be made.
*see whiteboard*
What is a transitional species?
Link between modern-day species and some ancient, extinct ancestor