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TLS Online TPP Program

#Question id: 8689

Which of the following statements best describes the rationale for applying the principle of maximum parsimony in constructing phylogenetic trees?

#SCPH05 I Biotechnology
  1. Parsimony allows the researcher to "root" the tree.
  2. Similarity due to common ancestry should be more common than similarity due to convergent evolution.
  3. The molecular clock validates the principle of parsimony.
  4. The outgroup roots the tree, allowing the principle of parsimony to be applied.
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TLS Online TPP Program

#Question id: 2724

#SCPH05 I Biotechnology

When DNA is compacted by histones into 10 nm and 30 nm fibers, the DNA is unable to interact with proteins required for gene expression. Therefore, to allow for these proteins to act, the chromatin must constantly alter its structure. Which processes contribute to this dynamic activity?
TLS Online TPP Program

#Question id: 567

#I Life Science/ Life Sciences Group – I-V

Penicillin and related drugs inhibit the enzyme; this enzyme is produced by 
TLS Online TPP Program

#Question id: 14158

#SCPH01 Biochemistry

BLAST uses a _______ to find matching words, whereas FASTA identifies identical matching words using the _____
TLS Online TPP Program

#Question id: 3851

#SCPH05 I Biotechnology

Transcription is initiated at sites called:
TLS Online TPP Program

#Question id: 11074

#I Life Science/ Life Sciences Group – I-V

A 30-year-old woman performs a valsalva maneuver about 30 min after eating lunch. Which of the following best describes the changes in pulmonary and systemic blood volumes that occur in this woman?