Red kernel color in wheat results from the presence of at least one dominant allele of each of two independently segregating genes . Kernels on rr bb plants are white, and the genotypes R— bb and rr B— result in brown kernel color. Suppose that plants of a variety that is true breeding for red kernels are crossed with plants true breeding for white kernels produced F1 were allowed to selfing .what are F2 phenotype ratio ?

#Question id: 4503

#Unit 3. Fundamental Processes

Pol I transcribes the human rRNA genes, the promoter for the rRNA gene comprises two parts: the core element and the UCE (upstream control element), for initiation there are two factors-

#Question id: 4504

#Unit 3. Fundamental Processes

What will be the molecular weight of poly(A) chain consisting of 100 residues, where weight of AMP is 500?

#Question id: 4505

#Unit 3. Fundamental Processes

Symplekin protein is participats in which of the following processes;

#Question id: 4506

#Unit 3. Fundamental Processes

Which process is very much similar to polyadenylation, because its takes place by the multiple protein complexes,

#Question id: 4507

#Unit 3. Fundamental Processes

A group of introns that-unlike those we have considered thus far-can splice themselves out of pre-mRNA without the need for the spliceosome, they are called

#Question id: 4508

#Unit 3. Fundamental Processes

Statement: In the case of group II introns, the chemistry of splicing and the RNA intermediates produced are the same as those for nuclear pre-mRNA.

 Explanations: I. The intron uses an A residue within the branch site to attack the phosphodiester bond at the boundary between its 5’ end and the end of the 5’ exon-that is, at the 5’ splice site. This reaction produces the branched lariat.

II. A second reaction in which the newly freed 3’ -OH of the exon attacks the 3’splice site, releasing the intron as a lariat and fusing the 3’ and 5’ exons.