phylogenetic trees
DESCRIPTION
Phylogenetic Trees. Bellwork - have SLATE out!. Use this diagram to create your family tree. (Add parents, siblings, cousins, aunts, uncles, etc.) As soon as you are finished- head out to lab for the next two evolution evidence stations. Finished early?. - PowerPoint PPT PresentationTRANSCRIPT
Phylogenetic Trees
Bellwork- have SLATE out!
1. Use this diagram to create your family tree. (Add parents, siblings, cousins, aunts, uncles, etc.)
2. As soon as you are finished- head out to lab for the next two evolution evidence stations
Finished early?PreAP is ready for a bigger
quiz (95% + did very well on natural selection one Wednesday) play pictionary with a neighbor or quiz each other. ANYthing in notetaker or labs is fair game.
(No dissection info or specific era dates on this quiz)
Phylogenetic Trees
Traditionally classification was based on physical similarities.
What does this guy/gal look similar to?
Phylogenetic Trees
Traditionally classification was based on physical similarities.Physical similarities are
not always the result of close relationships.
Evolved similar adaptations to a raccoon
in different environments…what
type of evolution?
Phylogenetic Trees
Modern classification uses molecular biology (DNA) to determine how similar the genes are between species. What does this
guy/gal look similar to?
Phylogenetic Trees
Modern classification uses molecular biology (DNA) to determine how similar the genes are between species. What does this
guy/gal look similar to?
Phylogenetic Trees
Modern classification uses molecular biology to determine how similar the genes are between species.Genetic similarities more accurately show
evolutionary relationships
Phylogenetic Trees9. Phylogeny - evolutionary history
for group of species. Uses evidence from
living species, fossil record, & molecular data (DNA)
shown with branching tree diagrams
Phylogenetic TreesDifferen
t Specie
s
Evolution events
(new traits or
speciation)
Oldest Ancest
or
Phylogenetic TreesScientists use fossil record, structural comparisons and DNA to construct trees.
Each time a branch divides, it shows emergence of a new species.
Speciation is which type of
evolution?
Which 2 organisms are Most closely related???
Feathers
Large forehe
ad
How many species does this phylogenetic tree show???
6 Feathers
Large forehe
ad
Name one of the evolution events
•Large forehead•feathers
Feathers
Large forehe
ad
Which species have large foreheads?
Sauropods,
Theropods & Birds
Feathers
Large forehe
ad
Phylogenetic Trees # of branches
indicates the degree to which 2 organisms are related.
Think, are you more closely related to your sibling or your cousin??
Look back at your family
tree…how many branches
between you and a cousin?
Automobile phylogenetic tree
ALL vehicles evolved from a PRIMATIVE 4-wheeled ancestor
Work with your partner to create a phylogenetic tree for the vehicles.
Be ready to justify your answers
The Rambler – car with 3 wheels, 4 doors, front and back seat.
The Oxen – car with 4 wheels, 4 doors, front and back seat. The Dispensor – car with 4 wheels, 2 doors, front seat only. The Rock – car with 4 wheels, 2 doors, front and back seat,
no top. The Hawk – truck with 4 wheels, 2 doors, 1 seat, 1 short bed. The Bull – truck with 4 wheels, 2 doors, 1 seat, 1 long bed. The Redwood – truck with 6 wheels, 2 doors, 1 seat. The Snake – a truck with 6 wheels, 4 doors, front and back
seat.
Closure1. What was challenging about the
activity?
2. Is there only one correct answer? Why or why not?
3. What real life challenges would phylogeneticists face when trying to figure out the evolutionary history for several species?