The following statements were made regarding the patterning of anterior-posterior body plan of Drosophila:

A. Mutant bicoid mRNA that leads to the deletion of head and thorax

B. bicoid mutant phenotype expressed  two telson phenotype

C. the Bicoid protein activates the zygotic expression of the hunchback gene

D. the bicoid mRNA is represses the hunchback mRNA

Which one of the following options represents all correct statements as made above?

TLS Online TPP Program

#Question id: 1753

#Unit 4. Cell Communication and Cell Signaling

In the germinal center, B-cells become memory cells under the influence of:

TLS Online TPP Program

#Question id: 1754

#Unit 4. Cell Communication and Cell Signaling

High affinity B-cell clones in mammals are usually generated by:

TLS Online TPP Program

#Question id: 1755

#Unit 4. Cell Communication and Cell Signaling

Prior to class switching, B-cells express:

TLS Online TPP Program

#Question id: 1756

#Unit 4. Cell Communication and Cell Signaling

Which of the following is the cytokine that is most involved in the class switch to IgE production?

TLS Online TPP Program

#Question id: 1757

#Unit 4. Cell Communication and Cell Signaling

What is the first event following the production of CH germline transcripts by immunoglobulin genes?

TLS Online TPP Program

#Question id: 1758

#Unit 4. Cell Communication and Cell Signaling

The specificity of antibody secreted by a B-cell may not be the same as that of the surface Ig of the clonal parent because of: