TLS Online TPP Program

#Question id: 2981


For the nuclear envelope to be broken down as cells go from prophase to prometaphase during mitosis, the nuclear lamina has to be disassembled. Which of the following statement is incorrect?

#Unit 2. Cellular Organization
  1.  Phosphorylation of lamins A, B and C results in disassembly of the intermediate filament lattice into lamin dimers.

  2. Due to their C-terminal myristoylation, lamin B dimers remain associated with the nuclear membrane.

  3.  Depolymerization of the nuclear lamin filaments leads to the disintegration of the nuclear lamina meshwork and contributes to disassembly of the nuclear envelope.

  4. In telophase, removal of the phosphates by specific phosphatases promotes lamin reassembly, which is critical to re-formation of a nuclear envelope around the daughter chromosomes.

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TLS Online TPP Program

#Question id: 3426

#Unit 9. Evolution & Diversity of Life Forms

Fitness of three different genotypes is given in population I and II, under natural selection which of the following statement are correct?

TLS Online TPP Program

#Question id: 3427

#Unit 9. Evolution & Diversity of Life Forms

Natural selection can alter the frequency of distribution allele and heritable trait in different following way

A- Accumulation of those mutation that increase fitness of population in changing environment

B- Check accumulation of mutation that lower the fitness of species in unchanging environment

c- occur when population is subjected to divergent selection

TLS Online TPP Program

#Question id: 3428

#Unit 9. Evolution & Diversity of Life Forms

In a sample from an African population, the frequency of blood group allele IA, IB and IO were 0.30, 0.20 and 0.50 respectively. What is expected frequency of A and B blood group respectively when population size 1000?

TLS Online TPP Program

#Question id: 3429

#Unit 9. Evolution & Diversity of Life Forms

Which of the following is a behavioral pattern that results from a proximate cause?

TLS Online TPP Program

#Question id: 3430

#Unit 9. Evolution & Diversity of Life Forms

The proximate causes of behavior are interactions with the environment, but behavior is ultimately shaped by

TLS Online TPP Program

#Question id: 3431

#Unit 9. Evolution & Diversity of Life Forms

In the territorial behavior of the stickleback fish, the red belly of one male elicits attack from another male by functioning as