Evolution
4th Edition
ISBN: 9781605356051
Author: Douglas Futuyma, Mark Kirkpatrick
Publisher: SINAUER
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Chapter 16, Problem 8PDT
Summary Introduction
To explain: Methods in which the researchers can identify potential complications and ensure that their phylogenetic trees are robust to them.
Introduction: Inheritance is the basis of evolution. Study of the evolution of descendants from common ancestors is called phylogeny. The diagrammatic representation of phylogeny of an organism is termed as a phylogenetic tree.
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what is a major problem with morphologically based analysis of wale placement in a phylogenetic tree ?
The number of possible trees resulting from phylogenetic analysis grows exponentially with the number taxa, such that in a 22 taxon analysis there are more possible unrooted trees than there are stars in the universe.
A) True
B) False
C) It depends on the inference method and optimality criteria used.
D) Number of taxa and number of unrooted tree possibilities are unrelated in phylogenetic analysis.
Describe at least one reason that the traditional phylogenetic tree model may require modification.
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- The genome relatedness of different organisms can be shown with a phylogenetic tree constructed based on DNA sequence. (1) Why DNA sequences could be used to deduce genome relationship? (2) What else may be used to suggest the relatedness of different genomes?arrow_forwardAre these phylogenetic trees the same?arrow_forwardDo these phylogenetic trees tell the same story?arrow_forward
- List three reasons why rRNA genes are suitable for phylogeneticanalyses.arrow_forward1. a) What is a phylogenetic tree? b) What do the lines and branches in a phylogenetic tree represent?arrow_forwardDefine homology and homoplasy and explain their connection to the concept of parsimony in phylogenetic analysis. Provide an example of each and discuss the challenges they may present when inferring evolutionary relationships.arrow_forward
- Geneticists have determined the amount of DNA, the number of different genes, and the size of the cell/nucleus in a wide variety of model organisms. as we move up the phylogenetic scale, the amount of DNA/cell increases much more rapidly than does the volume in which that DNA must be packaged. How do higher organisms package their DNA in the interphase cell?arrow_forwarda) What is a phylogenetic tree? b) What is a branch point? c) What are sister taxa? d) What is a ‘rooted’ phylogenetic tree?arrow_forwardI was given this and made a character matrix from it but I need help creating the most parsimonious phylogenetic tree for it.arrow_forward
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