The Mechanism of DNA Translation

The translation is the second step in gene expression. Gene expression occurs in 2 steps: Transcription: It refers to a copy of information from DNA to mRNA and it occurs in the nucleus. Translation: It refers to the polymerization of amino acids to form a polypeptide. Structures Important for Translation: mRNA: It is responsible for […]

What is the mechanism of DNA Transcription?

DNA Transcription is the process of copying genetic information from one strand of DNA into RNA. Like DNA Replication, the principle of complementarity governs the process of transcription, except that adenosine base pair with uracil instead of thymidine (as RNA does not contain thymidine base). But unlike DNA replication where the total DNA of an […]

DNA Replication Mechanism and its various Models

DNA Replication can be defined as a process by which DNA makes a copy of itself. Crick proposed three types of DNA replication method: Conservative Method: Parental DNA will remain intact and a new daughter DNA will be formed. Dispersive Method: Parental and daughter DNA will mix together and we get a new DNA with […]

What are Mutagens?

  Mutagens are the physical, chemical or biological agents that can cause mutation. Mutagens can be broadly classified as Two Types: Endogenous Mutagens Exogenous Mutagens Endogenous Mutagens: Mutagens are said to endogenous if they are already present inside the body of an organism. One of the most notable examples of endogenous mutagens is Reactive Oxygen […]

What Is Mutation and its Types?

Mutation is defined as a sudden, discontinuous variation in the phenotype (the physical appearance of an individual) and genotype (genetic makeup) of an organism. Depending upon the causes mutation are of three types: 1. Gene Mutation:  It occurs due to, alteration of DNA due to changes in the nucleotide sequence. It can be due to the change in a single […]

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