TLS Online TPP Program

#Question id: 5004


Pax-6 usually causes the production of a type of light-receptor pigments. In vertebrate eyes, though, a different gene (the rh gene family) is responsible for the light-receptor pigments of the retina. The rh gene, like Pax-6, is ancient. In the marine ragworm, for example, the rh gene causes production of c-opsin, which helps regulate the wormʹs biological clock. Which of these most likely accounts for vertebrate vision?

#Unit 11. Evolution and Behavior
  1. The Pax-6 gene mutated to become the rh gene among early mammals.

  2. During vertebrate evolution, the rh gene for biological clock opsin was co-opted as a gene for visual receptor pigments.

  3. In animals more ancient than ragworms, the rh gene(s) coded for visual receptor pigments; in lineages more recent than ragworms, rh has flip-flopped several times between producing biological clock opsins and visual receptor pigments.

  4. Pax-6 was lost from the mammalian genome, and replaced by the rh gene much later.

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TLS Online TPP Program

#Question id: 12903

#Unit 13. Methods in Biology

A gene isolation system that uses adapted vectors termed as_______

TLS Online TPP Program

#Question id: 12904

#Unit 13. Methods in Biology

Match the following:
1. Southern Blotting                               i. Melting temperature of DNA strand
2. DNA microchips                                   ii.oligonucleotide matching to DNA sample
3. ASO-PCR                                                 iii.DNA hybridization to oligo arrays
4. DGGE                                                        iv. labeled probe hybridization to DNA  

TLS Online TPP Program

#Question id: 12905

#Unit 13. Methods in Biology

Some gene/protein is used to identify the Disorder in humans
Match them correctly:
1. Tyrosine Kinase(TK)                        i. Atherosclerosis
2. HIV transactivator                          ii. Hypertension
3. Angiotensinogen                            iii. Kaposis Sarcoma
4. CET protein                                      iv. Cardiac Hypertrophy

TLS Online TPP Program

#Question id: 12906

#Unit 13. Methods in Biology

An alternative method labeling strategy used in karyotyping and gene localisation is _______

TLS Online TPP Program

#Question id: 12907

#Unit 13. Methods in Biology

The binding of a regulatory protein or transcription factor to a specific DNA site results in a complex which may be analyzed by the technique termed as _____

TLS Online TPP Program

#Question id: 12908

#Unit 13. Methods in Biology

Which statement is incorrect about CRISPR?