TLS Online TPP Program

#Question id: 4031


An experiment was designed to obtain nonspecific transcription from both strands of a DNA molecule. Which of the following strategies would be most effective in achieving this?

#Unit 3. Fundamental Processes
  1. Include the RNA holoenzyme in the reaction.

  2. Use the core enzyme of RNA polymerase.

  3. Enrich the preparation with sigma subunit. 

  4. Use intact DNA.

More Questions
TLS Online TPP Program

#Question id: 4777

#Unit 8. Inheritance Biology

Two non allelic genes P and Q governed Glume color in sorghum.

P... qq  = blakish purple           P.. Q...  = raddish purple

pp Q...  = brown                      ppqq    =  brown  

A cross was allowed between PpQq and ppQq. What is proportional of their progeny with Blakish, Raddish and brown respectively? 

TLS Online TPP Program

#Question id: 4778

#Unit 8. Inheritance Biology

The following is the biochemical pathway for purple pigment production in flowers of sweet pea: A cross is made between two parents with the genotype: Aabb x AaBb. What is proportional of plant with purple pigment?

TLS Online TPP Program

#Question id: 4779

#Unit 8. Inheritance Biology

Fruit color in eggplant due to interaction of three non-allelic genes A, B and C.  These three non-allelic genes are produce purple phenotype when they come together or separately. Following some genotype and their phenotype is given.

                                  A- -- --         Purple

                                 -- B- --         Purple

                                 -- -- C-         purple

                                 aabbcc         White    

 A Plant genotype AaBbcc was cross to plant with genotype aabbcc. What is probability of white phenotype among their offspring?

TLS Online TPP Program

#Question id: 4780

#Unit 8. Inheritance Biology

In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is produced when at least one dominant allele R is present at one locus and at least one dominant allele P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus (genotype R_pp). A pea comb is produced when two recessive alleles are present at the first locus and at least one dominant allele is present at the second (genotype rrP_). If two recessive alleles are present at the first and at the second locus (rrpp), a single comb is produced. Which of the following cross would produce ½ walnut and ½ pea comb ?

TLS Online TPP Program

#Question id: 4781

#Unit 8. Inheritance Biology

Two non allelic gene P and Q governed  Glume color in sorghum.

P= blakish purple          

Q = raddish purple (dependent over P gene )

If heterozygous Raddish purple were cross with homozygous brown color .What are phenotypic ratio of  progeny?

TLS Online TPP Program

#Question id: 4782

#Unit 8. Inheritance Biology

True breeding agouti mice with genotype AABB were cross to true breeding albino mice with genotype aabb. All F1 offspring having agouti phenotype were allowed to intercross to produce F2 progeny as following number –

                                 A- B -     180 agouti,

                                 aa B-        60 black

                                 --  bb        80 albino

A Male Mice with Aabb genotype was cross with female mice with AaBB genotype. What is probability of Black phenotype among their offspring?