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What are the 4 nitrogenous bases for DNA?
Molecules called nucleotides, on opposite strands of the DNA double helix, that form chemical bonds with one another. These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
What are the 4 nitrogenous bases of DNA and what is their importance?
The four nitrogenous bases are A, T, C, and G. They stand for adenine, thymine, cytosine, and guanine. Adenine always pairs with thymine, and cytosine always pairs with guanine. The pairing nature of DNA is useful because it allows for easier replication.
How do the 4 nitrogen bases pair for DNA?
Attached to each sugar is one of four bases–adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
What is adenine always pairs with?
In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.
Why does a only pair with T?
The answer has to do with hydrogen bonding that connects the bases and stabilizes the DNA molecule. The only pairs that can create hydrogen bonds in that space are adenine with thymine and cytosine with guanine. A and T form two hydrogen bonds while C and G form three.
What does G mean in DNA?
guanine
ACGT is an acronym for the four types of bases found in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T).
What are the four nitrogen bases in DNA?
The four nitrogen bases found in DNA are adenine, cytosine, guanine, and thymine. Each of these bases are often abbreviated a single letter: A (adenine), C (cytosine), G (guanine), T (thymine). The bases come in two categories: thymine and cytosine are pyrimidines, while adenine and guanine are purines ().
What are the 4 bases in DNA?
The four bases of DNA are: adenine (A), thymine (T), guanine (G), and cytosine (C).
What are the 4 nitrogen bases?
The four nitrogen bases are Adenine, Thymine, Cytosine, and Guanine. Their job is composing a code for DNA to shape the physical characteristics of most living things.
Which nitrogen bases pair together?
The nitrogenous bases on the two strands of DNA pair up, purine with pyrimidine (A with T, G with C), and are held together by weak hydrogen bonds. Watson and Crick discovered that DNA had two sides, or strands, and that these strands were twisted together like a twisted ladder — the double helix.