Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 24, Problem 3S
How does horizontal gene transfer (HGT) complicate phylogenetic analysis?
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Why do you suppose that horizontal gene transfer is more prevalent in single-celled organisms than in multicellular organisms?
Compare genome size, gene number, and gene density (a) in the threedomains and (b) among eukaryotes.
Chapter 24 Solutions
Biology
Ch. 24.1 - Prob. 1LOCh. 24.1 - Prob. 2LOCh. 24.1 - Prob. 3LOCh. 24.2 - Prob. 1LOCh. 24.2 - Prob. 2LOCh. 24.2 - Prob. 3LOCh. 24.2 - Explain why genome size and genome number do not...Ch. 24.3 - Define the terms segmental duplication, genome...Ch. 24.3 - Prob. 2LOCh. 24.4 - Prob. 1LO
Ch. 24.4 - Prob. 2LOCh. 24.5 - Prob. 1LOCh. 24.5 - Prob. 2LOCh. 24.5 - Prob. 3LOCh. 24 - Prob. 1DACh. 24 - Prob. 1IQCh. 24 - Prob. 2IQCh. 24 - Prob. 3IQCh. 24 - Humans and pufferfish diverged from a common...Ch. 24 - Prob. 2UCh. 24 - Prob. 3UCh. 24 - Homologous genes in distantly related organisms...Ch. 24 - All of the following are believed to contribute to...Ch. 24 - What is the fate of most duplicated genes? a. Gene...Ch. 24 - Chimp and human DNA whole-genome sequences differ...Ch. 24 - Prob. 2ACh. 24 - Analyze the conclusion that the Medicago...Ch. 24 - Analyze why an herbicide that targets the...Ch. 24 - The FOX2 gene is associated with speech in human....Ch. 24 - One of the common misconceptions about sequencing...Ch. 24 - How does horizontal gene transfer (HGT) complicate...
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- a) What is a phylogenetic tree? b) What is a branch point? c) What are sister taxa? d) What is a ‘rooted’ phylogenetic tree?arrow_forwardWhich of the following is termed as conserved gene order? a) Microarray b) Ortholog c) Synteny d) Paralogarrow_forwardTo what extent does gene sequencing alter the evolutionary perspective of scientists when it comes to classification?arrow_forward
- How does recombination in bacteria differ from recombination in eukaryotes? 1) Recombination does not occur in prokaryotes 2) Only the plasmid DNA goes through recombination in prokaryotes 3) Sister chromatids, not homologous chromosomes, exchange information during recombination in prokaryotes 4) A portion of DNA from genome is replaced with homologous DNA from another strain of bacteria.arrow_forwardThe following two sequences represent the same gene from two different species: Assume that all changes in the third position are synonymous and all in the first and second positions are nonsynonymous. a) How many synonymous sites (positions) are there in the gene? b) How many nonsynonymous sites (positions) are there in the gene? c) How many synonymous substitutions are there between species? d) How many nonsynonymous substitutions are there between species? e) What is the dN/dS ratio? f) What does the dN/dS ratio tell you about the evolution of this sequence? Finally, It has been hypothesized that population size affects genome size. What is the proposed relationship? How can it be explained?arrow_forwardHow can horizontal gene transfer influence evolution? Would you be able to detect it using phylogeny? What about horizontal gene transfer makes reading bacterial trees difficult?arrow_forward
- 1. a) What is a phylogenetic tree? b) What do the lines and branches in a phylogenetic tree represent?arrow_forwardWhat genes from the mitochondrion are also used for phylogeneticanalysis? Can you name and describe at least two genes?arrow_forwardWhat problem with the six-kingdom classification system was addressed by the three-domain classification system? How did it address the problem?arrow_forward
- Is conjugation a vertical gene transfer?arrow_forwardIf two chromosomes of a species are the same length and have similar centromere placements and yet are not homologous, what is different about them? Choose 1: A) Genes are different B) Alleles are different C) Loci are different D) Nothing is differentarrow_forwardHow is it possible for siblings to share the same DNA but have different ancestral results?arrow_forward
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