Separation of variable DNA strands in Meselson-Stahl experiments is achieved due to variability in:
Correct answer: D. Bases
- A. Pentose sugars
- B. Bonding
- C. Phosphate groups
- D. Bases
Explanation
In Meselson-Stahl's experiment, radioactive isotopes of nitrogen were used. This radioactive nitrogen became incorporated in the nitrogenous bases and aided in the separation of variable DNA strands in Meselson-Stahl's experiments. Replication of DNA is a process where stability and consistency of genetic information are maintained generation after generation or from parents to offspring. This stability and high degree of accuracy are provided by hydrogen bonding between base pairs of old and newly formed DNA strands.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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In the Meselson-Stahl experiment, after the first round of replication, each daughter DNA duplex consists of:
In order to construct another Okazaki fragment, DNA polymerase III jumps:
DNA leading strand is constructed through DNA polymerase III whereas Okazaki fragments are constructed through:
Which strand elongates towards the replication fork?
In prokaryotes, Okazaki fragments are_ long:
What is the role of DNA polymerase II during replication?