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TLS Online TPP Program

#Question id: 4354

Which of the following statements correctly describes the primary difference between enhancers and proximal control elements?

#SCPH06 I Botany

  1. Enhancers are transcription factors; proximal control elements are DNA sequences.

  2. Enhancers improve transcription; proximal control elements inhibit transcription.

  3. Enhancers are located considerable distances from the promoter; proximal control elements are close to the promoter.

  4. Enhancers are DNA sequences; proximal control elements are proteins.

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TLS Online TPP Program

#Question id: 8899

#SCPH06 I Botany

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?
TLS Online TPP Program

#Question id: 8899

#SCPH28 | Zoology

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?
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?