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). These two classes of dna probably represent
Answers
Answered by
0
Discuss the role of enzyme DNA ligase plays during DNA replication. ... However, it is discontinous at a lagging strand in the form of DNA segments. These DNA segments are known as Okazaki fragments. These fragments are later joined with the help of the enzymes DNA ligase. DNA base pairing, the base pairs are adenine-thymine and guanine-cytosine. ... If double stranded DNA has 14% G (guanine), what percent A (adenine), T (thymine) and C (cytosine) would you expect? ... If a sample of DNA has 15% Adenine, then what percentage of cytosine does it have?
Answered by
2
It represents the okazaki fragments. Okazaki fragments are the result of the lagging replication that occurs when the 5′ to 3′ stand end and is used as template for the duplication. At the end of the replication process every fragment is “sealed” togheter in order to get a continuous strand. Okazaki fragments, are bound by DNA ligase, which forms a new strand of DNA. There are two strands that are created when DNA is synthesized. The leading strand is synthesized continuously and is elongated during this process to expose the template that is used for the lagging strand (Okazaki fragments).
Similar questions