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TLS Online TPP Program

#Question id: 18862

What is the shortest distance that the eye must go to concentrate on any object?

#Unit 13. Methods in Biology
  1. 11 cm
  2. 25 cm
  3. 32 cm
  4. 42 Cm
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TLS Online TPP Program

#Question id: 13130

#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 process best explains the dynamics of genetic variation observed in this experiment? 
TLS Online TPP Program

#Question id: 28586

#Unit 2. Cellular Organization

Cyclin-dependent kinases (CDK) belongs to which family of kinases?
TLS Online TPP Program

#Question id: 5198

#General Aptitude

If n is a natural number , then (6n^2+6n) is always divisible by : 
TLS Online TPP Program

#Question id: 24656

#Unit 2. Cellular Organization

What is the “signature sequence” that is highly conserved in all K+ channels?
TLS Online TPP Program

#Question id: 15147

#Unit 8. Inheritance Biology

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;
you cross each haploid mutant strain to a different haploid mutant of the opposite mating type. From the results shown below deduce as much as you can about which mutations lie in the same gene. Clearly state any remaining ambiguities and suggest some general ways that the ambiguities might be resolved
a) That mutants 1 and 3 form one complementation group and are mutations in the same gene (gene A) 
b) That mutations 2 and 5 form a second complementation group and are mutations in a second gene (gene B).
c) That mutations 3 and 5 form a second complementation group and are mutations in a second gene (gene B).
d) The first ambiguity is whether mutant 4 has a mutation in gene A or B, or whether it represents a unique gene.
Which of the following is the correct prediction about mutants?