TLS Online TPP Program

#Question id: 4354


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

#SCPH01 Biochemistry
  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: 5220

#SCPH28 | Zoology

In comparing the genomes of humans and those of other higher primates, it is seen that humans have a large metacentric pair we call chromosome #2 among our 46 chromosomes, while the other primates of this group have 48 chromosomes and any pair like the human #2 pair is not present; instead the primate groups each have two pairs of midsize acrocentric chromosomes. What is the most likely explanation?

TLS Online TPP Program

#Question id: 5221

#SCPH06 I Botany

Unequal crossing over during Prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?

TLS Online TPP Program

#Question id: 5221

#SCPH28 | Zoology

Unequal crossing over during Prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?

TLS Online TPP Program

#Question id: 5222

#SCPH06 I Botany

 When does exon shuffling occur?

TLS Online TPP Program

#Question id: 5222

#SCPH28 | Zoology

 When does exon shuffling occur?

TLS Online TPP Program

#Question id: 5223

#SCPH06 I Botany

In order to determine the probable function of a particular sequence of DNA in humans, what might be the most reasonable approach?