Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 18, Problem 16P
Consider the phylogenetic tree below with three related species (A, B, C) that share a common ancestor (last common ancestor, or LCA). The lineage leading to species A diverges before the divergence of species B and C.
For gene X, no gene duplications have occurred in any lineage, and each gene X is derived from the ancestral gene X via
For gene Y, a gene duplication occurred in the lineage leading to A after it diverged from that leading to B and C. Are genes
For gene Z, gene duplications have occurred in all species. Define orthology and paralogy relationships for the different Z genes.
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Students have asked these similar questions
Molecular marker is used to determine relatedness of species which may directly or indirectly exerts an effect on diversity. A hypothetical ancestor has the following DNA sequences: G A A G C T A T T C A T T. There are two lineage with DNA sequences of G A A G G T A T T C T C G, and G A A C C T A T T C T G C.
(1) Determine the percentage of A and T in the DNA sequence of the hypothetical ancestor.
(2) Calculate the percentage of each nitrogenous base in the second lineage.
Which of the following best explains why coalescent-based phylogenetic inference is important in the age of phylogenomics?
A) Coalescent-based methods directly model gene tree histories independently to infer the species tree in a summary-based manner, which is important for phylogenomic analysis were hundreds to thousands of gene histories are analyzed.
B) Coalescent-based methods have the most advanced evolutionary models of molecular evolution, which is important for phylogenomic analysis were hundreds to thousands of gene histories are analyzed.
C) Coalescent-based methods are no more important than other types of phylogenetic inference, even for phylogenomic analyses.
D) None of the above.
Can you answer all the parts to this diagram
Species 1 and 2 are sister species from which you’ve cloned related genes. On the gene tree on the top of the next page, use labels to answer the following questions:
(a) Label the node that represents a gene duplication with “D,”
(b) Label the nodes that represent speciation events with “S,”
(c) Pick a pair of genes that are paralogs and label them both “P.”
(d) Pick a pair of genes that are orthologs and label them both “O.”
Chapter 18 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 18 - You have discovered a new species of Archaea from...Ch. 18 - 16.2 Repetitive DNA poses problems for genome...Ch. 18 - 16.3 When the whole-genome shotgun sequence of the...Ch. 18 - How do cDNA sequences facilitate gene annotation?...Ch. 18 - 16.5 How do comparisons between genomes of related...Ch. 18 - 16.6 You are designing algorithms for the...Ch. 18 - 16.7 You have sequenced a region of the Bacillus...Ch. 18 - You have just obtained 100-kb of genomic sequence...Ch. 18 - 16.9 The human genome contains a large number of...Ch. 18 - Based on the tree of life in Figure 16.12, would...
Ch. 18 - 16.11 When comparing genes from two sequenced...Ch. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Prob. 14PCh. 18 - 16.16 Consider the phylogenetic tree below with...Ch. 18 - You have isolated a gene that is important for the...Ch. 18 - 16.18 When the human genome is examined, the...Ch. 18 - Symbiodinium minutum is a dinoflagellate with a...Ch. 18 - Substantial fractions of the genomes of many...Ch. 18 - 16.21 A modification of the system, called the ...Ch. 18 - 16.22 A substantial fraction of almost every...Ch. 18 - 16.23 In the globin gene family shown in Figure ,...Ch. 18 - You are studying similarities and differences in...Ch. 18 - In conducting the study described in Problem 24,...Ch. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - If you were to compare your genome sequence with...
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