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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: 8900

#SCPH06 I Botany

Which of the following statements about craniates is (are) correct?
1. Craniates are more highly cephalized than are non-craniates.
2. Craniatesʹ genomic evolution includes duplication of clusters of genes that code for transcription factors.
3. The craniate clade is synonymous with the vertebrate clade.
4. Pharyngeal slits that can assist in gas exchange originated in craniates,
5. The two-chambered heart originated with the early craniates.
TLS Online TPP Program

#Question id: 8900

#SCPH28 | Zoology

Which of the following statements about craniates is (are) correct?
1. Craniates are more highly cephalized than are non-craniates.
2. Craniatesʹ genomic evolution includes duplication of clusters of genes that code for transcription factors.
3. The craniate clade is synonymous with the vertebrate clade.
4. Pharyngeal slits that can assist in gas exchange originated in craniates,
5. The two-chambered heart originated with the early craniates.
TLS Online TPP Program

#Question id: 8901

#SCPH28 | Zoology

The origin of the craniates occurred at roughly the same time as the
TLS Online TPP Program

#Question id: 8902

#SCPH28 | Zoology

What do craniates have that earlier chordates did not have?
TLS Online TPP Program

#Question id: 8903

#SCPH28 | Zoology

Terry detaches the snakelike organism from the fish and uses a knife to cut off its head. In doing so, its brain slides out onto the deck of the boat. Terry peers into the cut end of the head and notices that the brain had lain in a sort of pan-like structure that only partially surrounded the brain. What is the structure Terry is observing, and what is it made of?
TLS Online TPP Program

#Question id: 8904

#SCPH28 | Zoology

Terry takes the body of the snakelike organism and slices it open along its dorsal side. If it is a hagfish, what should Terry see?