A phylogenetic tree is a branching diagram that represents a hypothesis about th
ID: 151219 • Letter: A
Question
A phylogenetic tree is a branching diagram that represents a hypothesis about the evolutionary history of a group of organisms and the relationships between them.
Part A - Reading a phylogenetic tree
This is one possible phylogenetic tree representing the relationships between some members of phylum Arthropoda.
Use this phylogenetic tree and your knowledge of cladistics to determine the relationships between these species.
Rank the species from most closely related to horseflies to most distantly related to horseflies. If two species are equally close in their relatedness to horseflies, overlap them.
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flea
silverfish
mayfly
human body louse
dragonfly
katydid
most distantly related to horseflies
most closely related to horseflies
From most closely related to horseflies to most distantly related to horseflies. No items in the box. Background Image
The correct ranking cannot be determined.
Reset
Help
flea
silverfish
mayfly
human body louse
dragonfly
katydid
most distantly related to horseflies
most closely related to horseflies
From most closely related to horseflies to most distantly related to horseflies. No items in the box. Background Image
The correct ranking cannot be determined.
human body louse katydid flea horsefly dragonfly - mayfly silverfish Adapted from Biology by Campbell and Reece Pearson Education, Inc.Explanation / Answer
Phylogenetic Trees are helpful in identifying relationship betqbet the organisms based on their distance.
In the above case a flea is more closely related to horsefly than any other animal. As flea is more closely located to horsefly.
Similarly in this phylogenetic tree Silverfish has highest variation from horsefly.
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