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TLS Online TPP Program

#Question id: 3351

In pre-industrial period in England, most peppered moths had light coloration. During industrial revolution, many lichens died out and trees became blackened by soot from factories and interestingly, dark colored moths were predominantly seen. Which of the following observation is incorrect about above selection?

#Unit 11. Evolution and Behavior

  1. It is a directional or progressive selection

  2. Industrial melanism is an adaptation where the moths living in the industrial areas developed melanin pigment to hide themselves from their predators

  3. This happened due to natural selection of the camouflaging mechanism or the moths.

  4. It reduces the variations and maintains the mean value in a population, thereby preventing the evolutionary change

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TLS Online TPP Program

#Question id: 32255

#Unit 2. Cellular Organization

COPII Vesicle coated with following proteins, except:
TLS Online TPP Program

#Question id: 26369

#Unit 3. Fundamental Processes

The gene ftsZ plays a central role in division mutations in ftsZ
TLS Online TPP Program

#Question id: 18006

#Unit 11. Evolution and Behavior

During which geological period origin, first forests; lands plants well established?
TLS Online TPP Program

#Question id: 5141

#Unit 5. Developmental Biology

Which of the following statement not describe the concept of morphogenetic gradient?
TLS Online TPP Program

#Question id: 384

#Unit 1. Molecules and their Interaction Relevant to Biology

A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).