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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?

#Unit 11. Evolution and Behavior

  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: 28203

#Unit 5. Developmental Biology

Induction involving interactions of sheets of epithelial cells with adjacent mesenchymal cells and achieve their fate by signal, this process is called as___
TLS Online TPP Program

#Question id: 12328

#Unit 10. Ecological Principles

The dominant species in a community is
TLS Online TPP Program

#Question id: 19459

#Unit 13. Methods in Biology

Phase-contrast microscopy depends on the refractive index of the region of specimen and generates image in which we see a pattern of 
TLS Online TPP Program

#Question id: 15812

#Unit 5. Developmental Biology

In which type of cells, Sxl remains inactive during the early stages of development in drosophila?
TLS Online TPP Program

#Question id: 3932

#Unit 3. Fundamental Processes

Which is not a feature of eukaryotic mRNA processing?