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Describe the Deoxyribonucleic acid (DNA)
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diksha67:
DNA is a process in which characteristics of parents transmitted to its offspring.
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the dna is a essential component for reproduction because the dna defines a the next generation of a person by a genes it is a chemical process reproduction involves the dna copying and other cell apparatus copies similar to each other but not identical the chromosomes have have genes which transfers by DNA from one person to another .if information is different, protein will make altered the body design
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⭐✡ Deoxyribonucleic Acid (DNA)
Chromosomes are mainly made up of DNA.This acid was discovered by the Swiss biochemist,Frederick Miescher in 1869 while studying white blood cells.Initially this acid was reported to be only in the nucleus of cells.Hence,it was named nucleic acid.
However,it was later realized that it is present in other parts of the cells too.Molecules of of DNA are present in all organisms from viruses and bacteria to human beings.These molecules control the functioning,growth as well as the division which means the reproduction of the cells and are therefore called 'Master Molecules '
✡✡Structure of the DNA✡✡✡
The structure of the DNA molecule is the Same in all organisms.In 1953,Two scientist Watson and Crick produced a model of the DNA molecule.As per this model,two parallel threads of nucleotides are coiled around each other.This arrangement is called a 'double helix'.This structure can be compared with a coiled and flexible ladder.
Each strand in the molecule of the DNA is made up of many small molecules know as 'nucleotide'. There are four types of nitrogenous bases adenine,guanine,cytosine and thymine.Adenine and guanine are called as 'purines' while cytosine and thymine are called 'pyrimidines'.
In the structure of the nucleotide,a molecule of a nitrogenous base and phosphoric acid are each joined to a molecule of sugar.
As there are four types of nitrogenous bases, nucleotides also are of four types. Nucleotides are arranged like a chain in a molecule of DNA. The two threads of the DNA molecule are comparable to the two rails of a ladder and each rail is made up of alternatively joined molecule of sugar and phosphoric acid.Each rung of the ladder is a pair of nitrogenous bases joined by hydrogen bonds.Adenine always pairs with thymine and cytosine always pairs with guanine.
I hope this will helps you...
Thanks.
------------------
Thanks for your question????
⭐✡ Deoxyribonucleic Acid (DNA)
Chromosomes are mainly made up of DNA.This acid was discovered by the Swiss biochemist,Frederick Miescher in 1869 while studying white blood cells.Initially this acid was reported to be only in the nucleus of cells.Hence,it was named nucleic acid.
However,it was later realized that it is present in other parts of the cells too.Molecules of of DNA are present in all organisms from viruses and bacteria to human beings.These molecules control the functioning,growth as well as the division which means the reproduction of the cells and are therefore called 'Master Molecules '
✡✡Structure of the DNA✡✡✡
The structure of the DNA molecule is the Same in all organisms.In 1953,Two scientist Watson and Crick produced a model of the DNA molecule.As per this model,two parallel threads of nucleotides are coiled around each other.This arrangement is called a 'double helix'.This structure can be compared with a coiled and flexible ladder.
Each strand in the molecule of the DNA is made up of many small molecules know as 'nucleotide'. There are four types of nitrogenous bases adenine,guanine,cytosine and thymine.Adenine and guanine are called as 'purines' while cytosine and thymine are called 'pyrimidines'.
In the structure of the nucleotide,a molecule of a nitrogenous base and phosphoric acid are each joined to a molecule of sugar.
As there are four types of nitrogenous bases, nucleotides also are of four types. Nucleotides are arranged like a chain in a molecule of DNA. The two threads of the DNA molecule are comparable to the two rails of a ladder and each rail is made up of alternatively joined molecule of sugar and phosphoric acid.Each rung of the ladder is a pair of nitrogenous bases joined by hydrogen bonds.Adenine always pairs with thymine and cytosine always pairs with guanine.
I hope this will helps you...
Thanks.
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