Sunday Jun 16, 2024

Construction and Features of DNA


What Is DNA?

DNA – Deoxyribonucleic Acid is a bunch of natural compounds, primarily answerable for carrying and transmitting the genetic directions or the hereditary supplies from dad and mom to their offspring.

These nucleic acids are composed of nitrogenous bases, phosphate teams and sugar molecules, that are linked by totally different bonds in a collection of sequences.

Johannes Friedrich Miescher, the Swiss biologist, was the primary individual to acknowledge and determine a DNA molecule’s double helix construction within the 12 months 1869. Later it was proved that DNA is answerable for storing the genetic info in residing organisms by James Watson and Francis Crick.

There are three several types of DNA, which embrace A-DNA, B-DNA, Z-DNA. B-DNA, right-handed double-helical construction is present in people.

Construction of DNA – Deoxyribonucleic Acid

Within the cell, DNA is discovered throughout the nucleus. In larger animals and people, DNA is the genetic materials and represents a set of genes – that are the essential bodily and useful unit of heredity.

The DNA construction is known as a double helix. The DNA molecule includes two strands twisted round one another, which resembles a twisted ladder construction. Every strand consists of a spine, which includes an alternating group of phosphate and sugar teams. The nitrogenous bases are positioned within the center, holding collectively these two strands.

Each cell in our physique accommodates DNA and every strand of DNA is measured about 1.8 meters lengthy.

Features Of DNA – Deoxyribonucleic Acid

In all residing cells, DNA is principally concerned in gene remedy, gene expression, mobile metabolism, storing info, manufacturing of proteins, transcription and translation.

DNA acts as antioxidants and is concerned in selling mobile progress and muscular progress and strengthening the immune system. In all residing cells, DNA capabilities as:

Mutation— The set of modifications which happen within the DNA sequences.

The Replication course of — It’s concerned with the switch of the genetic info from the mum or dad cell to its daughters and equal distribution of DNA through the cell division.

DNA fingerprinting— This can be a main technique used for isolating and making pictures for DNA sequences. This laboratory method are extensively utilized in paternity exams for figuring out a DNA sequence and to hint the position of change in evolution. The DNA fingerprinting method has performed a major position in learning organic evolution, in analyzing the DNA and in forensic investigations by figuring out the suspects.

Keep tuned with BYJU’S to study extra about DNA, RNA, nucleotides, genes and different associated matters at BYJU’S.

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