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TLS Online TPP Program

#Question id: 5214

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?

#Unit 11. Evolution and Behavior

  1. They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.

  2. They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.

  3. They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.

  4. They are genes that are not expressed, even though they have nearly identical sequences to expressed genes.

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TLS Online TPP Program

#Question id: 10233

#Unit 10. Ecological Principles

Which of the following statements is the most appropriate define character displacement?
TLS Online TPP Program

#Question id: 10234

#Unit 10. Ecological Principles

You observed the two species of barnacles, species 1 and species 2, occupy upper and lower strata of intertidal rocks, respectively. Only when species 1 was removed by you from the upper strata, species 2 could occupy both the upper and lower strata. From the choice given below what would be your inference from these observations.
TLS Online TPP Program

#Question id: 10235

#Unit 10. Ecological Principles

Following some observation is correct about species of P, Q and R

A) Species P and R have generalized nich while Q has specialized nich

B) Species P and R have specialized nich while Q has generalized nich

C) Species P and R are more prone to extinct than Q species

D) Species Q is more prone to extinct than either P or R species
TLS Online TPP Program

#Question id: 10236

#Unit 10. Ecological Principles

Following figure represent fundamental and realized nich of species P and Q in gradient of temperature along sea shore. which of the following statement are correct? 


A) Fundamental niche of species P is greater than its realized nich

 B) Fundamental niche of species Q is greater than its realized nich

 C) Species Q is strong competitor than species P

 D) There is no effect on spaced occupied by Q in the presence or absence of species P
TLS Online TPP Program

#Question id: 10237

#Unit 10. Ecological Principles

Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?

 
TLS Online TPP Program

#Question id: 10238

#Unit 10. Ecological Principles

The diagram below shows the frequency distribution of two closely related bird species based on their resource use in sympatric. Which one of the following phenomena most appropriately explains the change in frequency distributions of species 1 and 2 in the figure given above?