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TLS Online TPP Program

#Question id: 10324

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

#XL - S Microbiology
  1. Each branch point represents a point in absolute time.
  2. Organisms represented at the base of such trees are ancestral to those represented at higher levels.
  3. The more branch points that occur between two taxa, the more divergent their DNA sequences should be.
  4. The common ancestor represented by the rightmost branch point existed more recently in time than the common ancestors represented at branch points located to the left.
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TLS Online TPP Program

#Question id: 19680

#XL - P Chemistry

Which test can tell the difference between p-chloroaniline and anilinium hydrochloride?
TLS Online TPP Program

#Question id: 5261

#XL - S Microbiology

Which of these statements about prokaryotes is correct?
TLS Online TPP Program

#Question id: 4619

#XL - S Microbiology

Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S.aureus infections were caused by MRSA. How can this best be explained?
TLS Online TPP Program

#Question id: 27313

#XL - T Zoology

Which type of interactions promote and stabilize the tetraloop structure.
TLS Online TPP Program

#Question id: 1073

#XL - T Zoology

Prions