Question

How many pairs of nitrogenous base pairs are found in human DNA?

Answer 1

In double-stranded DNA and RNA, base pairs are found where the bonds between them bind the two strands, making the double-stranded structures feasible. Base pairs themselves are derived from bases known as purines or pyrimidines, which are complementary nitrogen-rich organic compounds.

Complete answer:
Two complementary nitrogen rich organic molecules linked by hydrogen bonds are base pairs present in human DNA.

These are found in double-stranded DNA and RNA, where both strands are connected by the bond between them, making the double-stranded helix possible.

Four bases are included in DNA
Adenine , Guanine ( purines )
And
Thymine, Cytosine ( pyrimidines)

Adenine is only bonded to Thymine, and to Thymine,
Guanine only binds to Cytosine.
Uracil is substituted for thymine in RNA.

In a strand, the number of base pairs is equal to the number of nucleotides.
Base pairs within a DNA molecule are a representation of individual genes.
Around 20,000 to 25,000 genes make up the human genome.

You get a nucleotide base if you take one of the four nitrogenous bases and bring it together with a sugar molecule and a phosphate molecule. To form a single strand of DNA, the sugar and phosphate molecules bind the nucleotide bases together.

Two of these strands then loop around each other, forming the DNA double helix's twisted ladder shape. In order to make the ladder rungs, the nucleotide bases pair up, while the sugar and phosphate molecules make the sides. In particular variations, the bases have different shapes and pair up together A pairs with T, and C pairs with G to create base pairs.

In the correct order, add three billion of these base pairs together and you have a full collection of human DNA, the human genome. This corresponds to around a metre long DNA molecule. You have two copies, one from your father and one from your mother, of the genome. The metre-long series is broken into 23 parts, which in each of our microscopic cells are then tightly packed as chromosomes.

Note: The DNA base pair sequence of all individuals is almost identical, which is what makes us all human beings. There are however, minor differences in the order of the six billion base pairs in the DNA of everyone that cause the variations we see in hair colour, eye colour, nose shape, etc No two individuals have exactly the same sequence of DNA. Identical twins, since they originated from a single egg that split into two, producing two copies of the same DNA, are a bit of an exception to the law.