Similarltles between bacterial and eukaryotic DNA replication How is bacterial D

Question

Similarltles between bacterial and eukaryotic DNA replication How is bacterial DNA replication similar to eukaryotic DNA replication? Check All That Apply Both bacterial and eukaryotic DNA replication have a single origin of replication. Both bacterial and eukaryotic DNA replication occur In a bldirectional manner. Both bacterial and eukaryotic DNA replication result in two DNA double helices that are both composed of one parental strand and one new strand. Both bacterial and eukaryotic DNA replication result In one DNA double helx that was the template and one completely new DNA double helx. ? Both bactenal and eukaryotic DNA replication use the same four nucleotides (A, C, G, and T). Prev1 of 25 Next

Explanation / Answer

1) Options 2, 3 and 5 are correct options.

DNA replication in both eukayotes and prokaryotes in bidirectional and semi-conservative in nature. Unwinding the DNA is accomplished by an enzyme named DNA helicase. Manufacturing new DNA strands is orchestrated by enzymes called polymerases. In this pattern, the individual strands of DNA are manufactured in different directions, producing a leading and a lagging strand. Lagging strands are created by the production of small DNA fragments called Okazaki fragments that are eventually joined together. Both types of organisms also begin new DNA strands with a small primer of RNA. The nitrogenous bases (A, G, C and T) are universal in their presence in the DNA of all organisms irrespective of their species.

2) option 3 is the correct answer.

Lagging strands are created by the production of small DNA fragments called Okazaki fragments that are eventually joined together.

3) Option 1 is the correct answer.

The new DNA bases are formed according to the chargaff's rule. The rules of base pairing explain the phenomenon that whatever the amount of adenine (A) in the DNA of an organism, the amount of thymine (T) is the same. Similarly, whatever the amount of guanine (G), the amount of cytosine (C) is the same.

4) Option 5 is the correct answer.

The two strands are held together by hydrogen bonds between pairs of bases, not covalent bonds. Two hydrogen bonds exist between A and T and 3 hydrogen bonds exist between G and C.

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