Which of the following is NOT a feature of germinal center B-cells?

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#Question id: 33529

#Unit 2. Cellular Organization

A. X and Y chromosomes have descended from a common, very ancient autosome pair. 

B. X and Y chromosomes have descended from different autosome. 

C. During evolution, the X chromosome has retained most of the original genes, whereas the Y chromosome has lost most of them.

D. During evolution, the X chromosome has lost most of them, whereas the Y chromosome has retained most of the original genes.

Which of the following is correct combination

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#Question id: 11576

#Unit 7. System Physiology – Animal

The amino acid tyrosine is a starting substrate for the synthesis of :

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#Question id: 23679

#Unit 13. Methods in Biology

Which is not an important feature of site-directed mutagenesis of cloned DNA?

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#Question id: 66

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements regarding isomerism is incorrect regarding biomolecules?

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#Question id: 1886

#Unit 4. Cell Communication and Cell Signaling

Dead Wuchereria bancrofti can cause: