Phylogeny

Phylogeny is...

• The study of classification of different species

• The study of the evolutionary history of a species

• The study of prehistoric life

• The study of the distribution of different species

Tags

NGSS.MS-LS4-2

Phylogenetic trees show...

• Evolutionary relationships between different species

• How one species has evolved through time

• Which species has evolved the most

• Which species have evolved from other species

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

According to maximum parsimony...

• The simpler your phylogenetic tree, the better

• Phylogenetic trees should have many branches

• All organisms in a phylogenetic tree must descend from a common ancestor

• Phylogenetic trees must show all traits

The groups in a phylogenetic tree are called...

• Taxa

• Nodes

• Roots

• Branches

Select the area on the cladogram that identifies the MOST RECENT common ancestor?

Tags

NGSS.MS-LS4-2

An analysis of DNA and RNA sequences can be used to classify organisms. Which statement is best supported by the information in this dendrogram?

• Lesser pandas are more genetically similar to giant pandas than they are to raccoons.

• Brown bears are more genetically similar to giant pandas than they are to sun bears.

• Lesser pandas are more genetically similar to raccoons than they are to giant pandas.

• The bear species are all more genetically similar to dogs than they are to giant pandas.

Tags

NGSS.MS-LS4-2

I will review how to read a phylogenetic tree!

• Yes

• No

• Maybe

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

NGSS.MS-LS4-1

Five new species of bacteria were discovered in Antarctic ice core samples. The nucleotide (base) sequences of rRNA subunits were determined for the new species. The table below shows the number of nucleotide differences between the species.

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Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

NGSS.MS-LS3-1

​ (a)   is a branching diagram showing relationships among groups of clades while a ​ (b)   is a branching diagram that shows the inferred relationships between various species.

• cladogram

• phylogenic tree

Places on a phylogenetic tree where organisms share a common ancestor are called...

• Nodes

• Branches

• Taxa

• Species