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Why are the two strands of the double helix described as being complementary?
Wiki User
∙ 6y ago
they compliment each other in the sense that one always has the same pair.for example if you see green matched up with red in one part the other part where you see red again the pair will be green. please understand the colors are substituting the scientific names for the parts.
Wiki User
∙ 12y ago
Wiki User
∙ 7y agoBecause they together form the strand. One side is complementary, or completing the other side by fitting in the opposite nitrogen bases.
The two strands of a double helix are described as complementary because the bases are in pairs. The pairs are always the same.
Wiki User
∙ 13y agoit means that DNA molecule has two completing strands;which means :if you imagine a DNA strand that has AATGC ,for example, the opposite strand must have TTACG.because: a purine should be paired with a pyrimidine.now you may wonder that cytosin,tymin and uracil are pyrimidines so why A must pair with T.first you have to omit uracil because we dont have uracil in DNA and the reason for omitting cytosin is that A has 2 hydrogen bonds with T, meanwhile C needs 3 hydrogen bonds .this that C and G have 3 hydrogen bonds is that in their molecular base structure there are some elecronegative atoms .there are three electrnegative atoms in C and G but there are 2 in A nd T.
Wiki User
∙ 6y agoComplementarity is the key to understand the stability of the double helix of DNA in the Watson-Crick model (the most stable among other conformations). DNA complementarity property is determined by the rules for base pairing between A-Tand G-C. In a "perfect duplex DNA" (or Watson-Crick model), the strands are precisely complementary. If we compare two different but related double-stranded molecules, therefore, each strand of the first molecule will be similar to one strand of the second one and will be (partly) complementary to the other strand of the second molecule. This property of the molecule of DNA was the key to elucidate the correct correspondence between strands and to propose the model in that historical paper by James Watson and Francis Crick in 1953 [Nature, 171, 737 (1953)], were they wrote:
"If it is assumed that the bases only occur in the structure in the most plausible tautomeric forms
(that is, with the keto rather than the enol configurations) it is found that only specific pairs of bases can bond together. These pairs are adenine (purine) with thymine (pyrimidine) and guanine (purine) with cytosine (pyrimidine).
In other words, if an adenine forms one member of a pair, on either chain, then on these assumptions the other member must be thymine; similarly for guanine and cytosine. The sequence of bases on a single chain does not appear to be restricted in any way. However, if only specific pairs of bases can be formed, it follows that if the sequence of bases on one chain is given, then the sequence on the other chain is automatically determined.
It has been found experimentally that the ratio of the amounts of adenine to thymine, and the ratio of guanine to cytosine, are always very close to unity for deoxyribose nucleic acid." (In perfect agreement with the Chargaff's rules)
Wiki User
∙ 14y agoWell, because the sequence of bases on one strand determines the sequence of bases on the other strand.
Wiki User
∙ 14y agoThis.
ATCCGTTGGC
TAGGCAACCG
base pair to base pair.
Wiki User
∙ 11y agoit means swag
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IMPORTANT After DNA replication does half of the old strand leave with half of the new strand?
The process of DNA replication is described as being semi-conservative. The complementary DNA strands are pulled apart, new matching nucleotides are connected to each separate strand, and the result is two new strands that each contain exactly one-half of the original DNA strand.
The three-dimensional shape of the DNA molecule is described as being?
A double helix
Why is DNA replication considered semiconservative?
It is known as SEMI-CONSERVATIVE REPLICATION because the DNA produces two copies of DNA that each contain the original strand and one entirely new strand. You can definitely compare this to complementary base pairing. Hope this helps :) ~T.K
How is the formation of messanger rna similar to DNA replication?
Both involve the DNA double helix being "unzipped" (the two strands being separated) and nucleotides attaching to the newly exposed surface. Both create a copy of the DNA and occur in the nucleus.
Why are two new strands of DNA exactly like the old strand?
The new strands have new complementary bases on one side and the other is made of the original strand. A strand of DNA has two strands that are complementary to each other in a double helix. When it gets copied one side is used as a template for the new side being added on, the bases cytosine and guanine match up and the bases adenine and thymine match up to each other. For example: If the original DNA strand has this order: 3' G-A-T-A-A-C-C 5' then the new complementary strand has: 5' C-T-A-T-T-G-G 3'
What would the base sequences on the other strand of Dna be?
They would be described as being complementary - as in complementary base pairing.
IMPORTANT After DNA replication does half of the old strand leave with half of the new strand?
The process of DNA replication is described as being semi-conservative. The complementary DNA strands are pulled apart, new matching nucleotides are connected to each separate strand, and the result is two new strands that each contain exactly one-half of the original DNA strand.
How many strands of nucleotides are in DNA?
Thousands upon thousands. Because DNA must contain all the characteristics of your being, it must be long.
The three-dimensional shape of the DNA molecule is described as being?
A double helix
Why is DNA replication considered semiconservative?
It is known as SEMI-CONSERVATIVE REPLICATION because the DNA produces two copies of DNA that each contain the original strand and one entirely new strand. You can definitely compare this to complementary base pairing. Hope this helps :) ~T.K
What enzymes are responsible for replication of the DNA molecule?
Helicase is the enzymes that splits the double helix into two separate strands, and DNA Polymerase (as opposed to RNA Polymerase) joins the nucleotides together in the new strands being created.
How is the formation of messanger rna similar to DNA replication?
Both involve the DNA double helix being "unzipped" (the two strands being separated) and nucleotides attaching to the newly exposed surface. Both create a copy of the DNA and occur in the nucleus.
Why are two new strands of DNA exactly like the old strand?
The new strands have new complementary bases on one side and the other is made of the original strand. A strand of DNA has two strands that are complementary to each other in a double helix. When it gets copied one side is used as a template for the new side being added on, the bases cytosine and guanine match up and the bases adenine and thymine match up to each other. For example: If the original DNA strand has this order: 3' G-A-T-A-A-C-C 5' then the new complementary strand has: 5' C-T-A-T-T-G-G 3'
Which event is being described by these statements?
Please provide the statements you are referring to for me to identify the event being described.
Explain how spiders can use vibrations to help them capture their prey?
Prey caught in the spiders web struggles. This causes vibrations in the web strands. The spider sits at the center of the web strands and using its legs, detects which strands are being moved. It then proceeds down those strands to the location of the ensnared insect and bites and secures it for eating.
Why IS DNA's structure is called the double helix?
Its structure is two spirals interlaced; double meaning two, helix being the technical word for such a shape. DNA is known as the double helix because it coils up into chromosomes and looks like a winding staircase.
Would a witty person be described as being?
I think it should be NO
