TLS Online TPP Program

#Question id: 21130


Erythritol is__

#Unit 12. Applied Biology
  1. Noncarcinogenic
  2. Sucrose sugar 
  3. Highly caloric
  4. Bitter in taste
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TLS Online TPP Program

#Question id: 19366

#Unit 13. Methods in Biology

Which of the following is site specific recombination?

TLS Online TPP Program

#Question id: 13132

#Unit 10. Ecological Principles

Biologists performed an experiment with flies to examine the effects of population size on the maintenance of genetic variation  and  on  egg-to-adult survival.  From  a  large  source  population, they  randomly  assigned  eggs  to  three experimental  populations  of  size  N,  equal  to  20,  60,  and0100.  For  later  generations,  they  collected  N  eggs  from each  population  and  moved  them  into  identical  vials  that  co0ntained  f2re0sh  me4d0ium.  Th6e0y  coun8te0d  the  number  of adult flies that emerged and used tissue samples from the adults for genetic analyses. Genetic variation was measured by  scoring  alleles  at  several  polymorphic  loci  and  expressed  as  the  average  number  of  alleles  at  those  loci.  The results are summarized in Figure 1 and Figure 2 below.

Which other process appears to have substantially influenced the outcome of this experiment? 

TLS Online TPP Program

#Question id: 8961

#Unit 9. Diversity of Life Forms

What does recent evidence from molecular systematics reveal about the relationship between grades and clades?

TLS Online TPP Program

#Question id: 11480

#Unit 7. System Physiology – Animal

Most of the chemosensory neurons arising in the nasal cavity have axonal projections that terminate in the ________.

TLS Online TPP Program

#Question id: 12657

#Unit 6. System Physiology – Plant

Experiments performed in the laboratory of Anne Osbourn at the John Innes Centre  utilized genetic approaches to demonstrate the role of saponins in defense against pathogens of oat. If Mutant oat lines then,