Hydrogen bonds, because when replication is completed, each new DNA molecule consists of one new nucleotide chain joinged by hydrogen bonds to a nucleotide chain from the original DNA molecule. Purines and pyrimidines are joined by hydrogen bonds too. The covalent bonds are found in the sugar-phosphate backbones, which are the same through out DNA molecules.
Importance of Hydrogen bonds - they can be easily broken during replication process by the enzyme helicase, which unwinds the double helix.
The Hydrogen bonds maintain a complementarity structure between the two opposite DNA strands
Base pairing is when two bases that are complementary to each other bind (through hydrogen bonding). A pairs with T and G with C (in DNA). There are 2 strands and these strands are complementary to each other so if one strand is ATGC the other strand is TACG. When DNA replication occurs, the two strands which are bound together, get split into singles strands. Then an enzyme called DNA polymerase comes and attaches to the single stand and adds its complementary base pair forming new replicated DNA.Note: this is a very general version of DNA replication, there is so much more that happens.
I'm presuming we are talking about base pairs of DNA - there are 3 hydrogen bonds between G and C and 2 H bonds between A and T. As we know G and A are purines and T and C are pyrimidines, so these help maintain equal distance b/w the 3'-5' and 5'-3' ( anti parallel ) chains of DNA.
DNA is a double helical structure and the H bonds basically help in keeping the anti parallel chains together. And as DNA and its structure is the basics of living organism, its very important for it to be in that form. :)
Hydrogen bonds help in keeping together two complementary nucleotides in a DNA double strand.
Mismatches in DNA replication would be due to the fact of incorrect base pairing and thus so the answer is hydrogen bonds, since these are responsible for base pairing
No the hydrogen fuses with the water vapors.
This is false transcription does not follows the same base-pairing rules as DNA replication except for cytosine which has a different partner. Transcription begins with an enzyme called RNA polymerase.
I think there is a mistake in the question. The DNA replication is said to be semi-conservative because during DNA replication one stand will be parental and the other will be newly formed. This happens due to the complimentary base pairing.
Complementary base pairing
DNA replication is a semi-conservative process. The DNA is split into two strands. Nucleotides are then attached to each strand by complementary base pairing, where A attaches to T and G attaches to C. The newly formed strand is hence identical to the old strand and the base sequence of DNA can hence be conserved during replication.
So essentially the difference is that in DNA-DNA base pairs thymine bonds with adenine while in DNA-RNA base pairs thymine bonds to uracil.
i am not sure
i think it because the DNA replicates
The base-pairing during transcription is the same as when DNA replicates, except that RNA has uracil instead of thymine.
This is false transcription does not follows the same base-pairing rules as DNA replication except for cytosine which has a different partner. Transcription begins with an enzyme called RNA polymerase.
DNA polymerases add nucleotides to the exposed base pairs according to base-pairing rules.
Complementary base pairing is necessary because it ensures the fidelity of the DNA sequence during replication. Because only one base can pair with only one other, the two daughter strands of DNA made during replication will be the exact same as the original parent strand. If this were not the case DNA replication would result in random DNA sequences.
I think there is a mistake in the question. The DNA replication is said to be semi-conservative because during DNA replication one stand will be parental and the other will be newly formed. This happens due to the complimentary base pairing.
DNA replication
DNA replication is the process in which the hydrogen bonds between the two strands of DNA are broken and then new DNA nucleotides are bonded along each strand according to the base-pairing rule. The result is two identical molecules of DNA.
The difference between transcription and DNA replication is that transcription uses uracil.
Complementary base pairing
i am not sure