what is shape of DNA and name the nitrogenous bases
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The DNA molecule is shaped like a ladder that is twisted into a coiled configuration called a double helix. The nitrogen bases form the rungs of the ladder and are arranged in pairs, which are connected to each other by chemical bonds.
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DNA strand us composed of repeating nucleotides which are made up of three components : phosphate, sugar(pentose) arranged lengthwise and nitrogeneous waste attached to the sugar inwards which extends to join the complementary nitrogenous waste from other strand..
- there are four nitrogeneous wastes namely:
- Adenine
- guanine
- thymine
- cytosine
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