TLS Online TPP Program

#Question id: 16487


Few limitations regarding organ culture 
It can be maintained only for a few months
Not suitable for biochemical and molecular analyses
For each study, fresh organ cultures have to be initiated
It denatures very easily
Which of the above statements are correct? 

#Unit 12. Applied Biology
  1. 1&2
  2. 1,3 & 4
  3. 1, 2 & 3 
  4. All
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TLS Online TPP Program

#Question id: 3424

#Unit 11. Evolution and Behavior

Which of the following statement is correct? 

A. Darwin, theory of natural selection based on better-adapted organisms would acquire more resources and leave more offspring.

B. When population sizes become too small, individuals accumulate deleterious (harmful) mutations, and survival of offspring is threatened

C. Inbreeding is more likely to take place in nature when population size becomes very small and the number of mates is limited.

D. Effective population size can be reduced by harem mating structures

E. The movement of a few individuals between populations can counteract the effects of genetic drift

TLS Online TPP Program

#Question id: 3425

#Unit 11. Evolution and Behavior

Many evolutionary forces are operating in population. In study, within population increase genetic variation due to -----A-----while decrease genetic variation due to ------B-----. Between populations increase genetic variation due to -----C-----while decrease genetic variation due to ------D-----.

TLS Online TPP Program

#Question id: 3426

#Unit 11. Evolution and Behavior

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 11. Evolution and Behavior

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 11. Evolution and Behavior

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: 16204

#Unit 11. Evolution and Behavior

Evolution of different characters at different rates within a lineage called as?