You briefly expose bacteria undergoing DNA replication to radioactively labeled nucleotides. When you centrifuge the DNA isolated from the bacteria, the DNA separates into two classes. One class of labeled DNA includes very large molecules (thousands or even millions of nucleotides long), and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length). Which two classes of DNA do these different samples represent?

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#Question id: 27926

#Unit 11. Evolution and Behavior

Which of the following process is responsible  for causing duplication?

a) Replication slippage

b) retrotransposition

c) Mutation

d) exon shuffling

e) Intron shuffling

f) Polyploidy

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#Question id: 21113

#Unit 12. Applied Biology

What are the disadvantages of biochemical methods?

 Not portable

 Time-consuming

 Tedious

Which of the following options are incorrect?

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#Question id: 4499

#Unit 3. Fundamental Processes

The final RNA processing event, polyadenylation of the 3’end of the mRNA, is intimately linked with the termination of transcription. Just as with capping and splicing, the polymerase CTD tail is involved in recruiting some of the enzymes necessary for polyadenylation,

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#Question id: 14511

#Unit 13. Methods in Biology

The probability of getting a multiple of 2 in the throw of a die

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#Question id: 12136

#Unit 10. Ecological Principles

Which of the following is an example of aposematic coloration?