TLS Online TPP Program

#Question id: 4671


CpG island promoters are methylated at position 5 of the pyrimidine ring. CG sequences are thought to be underrepresented in mammalian genomes because

#Unit 3. Fundamental Processes
  1. spontaneous deamination of 5-methyl C generates thymidine

  2. spontaneous deamination of 5-methyl C generates uracil

  3. spontaneous deamination of 5-methyl C generates inosine

  4. spontaneous amination of 5-methyl C generates uracil

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TLS Online TPP Program

#Question id: 9616

#Unit 9. Diversity of Life Forms

Which mutation should least require realignment of homologous regions of a gene that is common to several related species?

TLS Online TPP Program

#Question id: 9618

#Unit 9. Diversity of Life Forms

Generally, within a lineage, the largest number of shared derived characters should be found among two organisms that are members of the same

TLS Online TPP Program

#Question id: 10324

#Unit 9. Diversity of Life Forms

Which of the following is not true of all horizontally oriented phylogenetic trees, where time advances to the right?

TLS Online TPP Program

#Question id: 11163

#Unit 9. Diversity of Life Forms

The reason that paralogous genes can diverge from each other within the same gene pool, whereas orthologous genes diverge only after gene pools are isolated from each other, is that

TLS Online TPP Program

#Question id: 11162

#Unit 9. Diversity of Life Forms

Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

TLS Online TPP Program

#Question id: 11161

#Unit 9. Diversity of Life Forms

The lakes of northern Minnesota are home to many similar species of damselflies of the genus Enallagma that have apparently undergone speciation from ancestral stock since the last glacial retreat about 10,000 years ago. Sequencing which of the following would probably be most useful in sorting out evolutionary relationships among these closely related species?