Chromosomes

The double helical structure of the DNA is usually too long (almost 2 meters in length) to be placed in a nucleus linearly so the DNA is supercoiled to make it fit into the space of the nucleus. As the DNA is helical, whenever it is rotated any further it will coil many times upon itself forming a super coil. This coiling is assisted by proteins to make the long thread compactly packed to fit inside the nucleus. These packed structures are found in the form of thread-like structures called chromosomes.

DNA: Structure, Types, and Functions

DNA structure is made of nucleotide base pairs (other than RNA). DNA is the hereditary material that is possessed by all the organisms found on the Earth except certain virus species. DNA functions involve the transfer of genetic information from generation to generation.

The full form of DNA is Deoxyribonucleic acid which stands; ‘deoxy’ stands for missing oxygen, ‘ribo’ stands for ribose sugar, ‘nucleic’ represents the nucleus of a cell, and ‘acid’ represents the acidic nature of DNA due to phosphorus. In this article, we will cover DNA structure and functions, its types, and importance.

Table of Content

  • What is DNA?
  • Who Discovered DNA?
  • Properties of DNA 
  • Structure of DNA
  • Chromosomes
  • Types of DNA
  • Functions of DNA
  • Difference between RNA and DNA 
  • DNA as the Genetic Material 
  • Importance of DNA 
  • DNA Replication

Similar Reads

What is DNA?

DNA or Deoxyribonucleic Acid is the genetic material that codes the information for all the different processes that make an organism living like growth, replication, metabolism, etc. DNA is present in each cell (except for some viral species, RBCs, sieve cells, etc.) and is passed down from parents to their offspring. DNA is comprised of units called nucleotides. DNA is self-replicating, a long stretch of nucleotides....

Who Discovered DNA?

The brief history of DNA includes...

Properties of DNA

DNA shows the following main characteristics;...

Structure of DNA

The DNA structure represents a helical ladder and is depicted as a double helix. It is a nucleic corrosive, and all nucleic acids are comprised of nucleotides. The structure of DNA molecule is made out of units called nucleotides, and every nucleotide is made out of three parts i.e. sugar, phosphate, and nitrogen bases. The bases A, T, G, and C are held by the sugar-phosphate complex to form the DNA strands. These 4 Nitrogenous bases pair together in an accompanying manner: A with T and C with G....

Chromosomes

The double helical structure of the DNA is usually too long (almost 2 meters in length) to be placed in a nucleus linearly so the DNA is supercoiled to make it fit into the space of the nucleus. As the DNA is helical, whenever it is rotated any further it will coil many times upon itself forming a super coil. This coiling is assisted by proteins to make the long thread compactly packed to fit inside the nucleus. These packed structures are found in the form of thread-like structures called chromosomes....

Types of DNA

Following are some most common types of DNA found;...

Functions of DNA

Following are some of the important functions of DNA;...

Difference between RNA and DNA

Some of the common differences between DNA and RNA are mentioned here:...

DNA as the Genetic Material

Both DNA and RNA contain the sugar ribose, which is a ring of carbon molecules encompassed by oxygen and hydrogen. In any case, though RNA contains a complete ribose sugar, DNA contains a ribose sugar that has lost one oxygen and one hydrogen particle. The additional oxygen and hydrogen content in RNA leaves it susceptible to hydrolysis by enzymes....

Importance of DNA

DNA contains the information that is fundamental for a living being to develop, function, and reproduce. DNA assists your body with development. The cells read this code on three bases all at once to create proteins that are fundamental for development and growth. Each combination of three nucleotide bases codes to amino acids, which are the structure blocks of proteins. Proteins are the main functional unit that directly and indirectly gets associated with all the functions of living systems when synthesized correctly....

DNA Replication

DNA replication is the process by which the DNA makes its copy. In this process, the two strands break to make two templates on which new opposite strands are formed. That means 1 double helical DNA will give rise to two new double helical DNA. As in the new DNA one strand comes from the parent DNA, the process is therefore called semi-conservative. DNA replication involves the following steps;...

Conclusion: DNA – Structure, Types, and Functions

DNA, the hereditary material present in almost all organisms, consists of nucleotide base pairs. It is important for genetic transfer across generations. It stands for Deoxyribonucleic Acid, reflecting its composition of deoxyribose sugar, phosphate, and nitrogenous bases, with adenine pairing with thymine and guanine with cytosine. The structure of DNA, resembling a twisted ladder or double helix, comprises nucleotides forming long strands, held together by hydrogen bonds between complementary base pairs. It plays vital roles in encoding genetic information, regulating metabolic processes, and facilitating cellular activities, essential for life’s continuity and diversity....

FAQs on DNA – Structure, Types, and Functions

What is DNA?...