TLS Online TPP Program

#Question id: 3274


The common edible frog of Europe is a hybrid between two species, Rana lessonae and Rana ridibunda. The hybrids were first described in 1758 and have a wide distribution, from France across central Europe to Russia. Both male and female hybrids exist, but when they mate among themselves, they are rarely successful in producing offspring. What can you infer from this information?

#Section 3: Genetics, Cellular and Molecular Biology
  1. Postzygotic isolation exists between the two frog species.

  2. Prezygotic isolation exists between the two frog species.

  3. These two species are likely in the process of fusing back into one species.

  4. The hybrids form a separate species under the biological species concept.

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TLS Online TPP Program

#Question id: 4757

#Section 3: Genetics, Cellular and Molecular Biology

The newborn baby of a mother having blood group O, Rh+ and father having blood group AB, Rh-, got mixed with other babies in the hospital. The baby with which of the following blood groups is not confirmable to be of the said couple?

(i) AB, Rh+                                                    (ii) O, Rh+

(iii) A, Rh+                                         (iv)  B, Rh+

TLS Online TPP Program

#Question id: 553

#Section 2: General Biology

The concept of “induced fit” refers to the fact that:

TLS Online TPP Program

#Question id: 15904

#Section 6: Plant, Animal and Microbial Biotechnology

If the cell arc treated with 0.01% solution of FDA, what will be the effect on live cell?

TLS Online TPP Program

#Question id: 21264

#Section 5: Bioprocess Engineering and Process Biotechnology

According to the 'law of mass action', the rate of reaction is directly proportional to the

TLS Online TPP Program

#Question id: 12910

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the following:
A. RNA analysis               i. Sexing or cell mutation sites               a. Expressed Sequence tag
B. Forensic science           ii. mRNA analysis                                     b.  Analysis of DNA from blood
C. Gene discovery              iii. DNA profiling                                       c. Active latent viral infections
D. Single-cell analysis     iv.  RT–PCR                                             d. Sex determination of unborn