The textbook states that the nucleotide sequence of splice sites is “highly conserved” and of “ancient origin.” How do we know this sequence is ancient?

#Question id: 31024

#Unit 4. Cell Communication and Cell Signaling

#Question id: 16776

#Unit 13. Methods in Biology

If the Mean and Mode are 25, then find the Median.

#Question id: 4091

#Unit 3. Fundamental Processes

To avoid being degraded by nuclear exonucleases, nascent transcripts, pre-mRNA-processing intermediates, and mature mRNAs in the nucleus must have their ends protected. Which of the following mechanism are present in the cell to protect mRNA from degradation?

I. The 5′ cap is protected because it is bound by a heterodimeric nuclear cap-binding complex (CBC), which protects it from 5′ exonucleases and also functions in export of the mRNA to the cytoplasm.

II. 5’-5’ phosphodiester bond in the cap of mRNA plays crucial role in protection

III. The 3′ end of a nascent transcript lies within the RNA polymerase and is thus inaccessible to exonucleases 

#Question id: 5267

#Unit 8. Inheritance Biology

The F plasmid carries the information for

#Question id: 29041

#Unit 10. Ecological Principles

Weather refers to the___