What is Plant Introduction? Types of Plant Introduction Plant introduction, a crucial aspect of crop improvement and agricultural development, can be categorized into two main types: primary introduction and secondary introduction. Each type serves distinct purposes and involves different processes to enhance crop varieties. 1. Primary Introduction 2. Secondary Introduction History of Plant Introduction The … Read more
In this article we will learn about Plant Breeding Introduction and objectives. Breeding systems: modes of reproduction in crop plants. Important achievements and undesirable consequences of plant breeding. What is Plant Breeding? History of plant breeding The history of plant breeding is deeply intertwined with the earliest human agricultural practices. As humans began to cultivate … Read more
What is Point mutation? Definition of Point mutation A point mutation is a genetic mutation involving a change in a single nucleotide base in the DNA or RNA sequence, which can affect the sequence of amino acids in a protein. Causes of Point mutation Point mutations are primarily caused by various mechanisms that affect the … Read more
What is Missense Mutation? Definition of Missense Mutation A missense mutation is a type of point mutation in which a single nucleotide change results in the substitution of one amino acid for another in the protein sequence, potentially altering the protein’s function. Types of Missense Mutation There are two Types of Missense Mutation; Causes of … Read more
What is Nonsense Mutation? Definition of Nonsense Mutation A nonsense mutation is a genetic alteration that introduces a premature stop codon into the coding sequence of a gene, leading to the production of a truncated and often nonfunctional protein. Causes of nonsense mutation Nonsense mutations are a specific type of genetic mutation where a change … Read more
What are Silent mutations? Definition of Silent mutations Silent mutations are genetic changes in the DNA sequence that do not alter the amino acid sequence of a protein, resulting in no effect on the protein’s function or the organism’s phenotype. Cause of Silent Mutation Silent mutations are genetic changes that do not alter the final … Read more
What is Frameshift Mutation? Definition of Frameshift Mutation A frameshift mutation is a genetic alteration caused by the insertion or deletion of nucleotides in a DNA sequence, which shifts the reading frame of codons and results in the production of an altered and typically nonfunctional protein. Causes of Frameshift Mutation The main causes of frameshift … Read more
What is Chromosomal mutation? Definition of Chromosomal Mutation Chromosomal mutation refers to alterations in the structure or number of chromosomes within a cell, which can impact genetic information and potentially lead to various genetic disorders. Causes of Chromosomal Mutation Mechanism of Chromosomal Mutation Chromosomal mutations arise through various mechanisms that can be broadly categorized into … Read more
What is Somatic Mutation? Definition of Somatic Mutation A somatic mutation is a genetic change that occurs in non-reproductive cells after fertilization, which typically does not get passed on to offspring. Causes of Somatic Mutation Several factors and stressors can contribute to somatic mutations. These can be categorized into endogenous factors, chemical mutagens, physical mutagens, … Read more
What is Induced Mutation? Mechanism of induced mutation Induced mutations occur when external agents, known as mutagens, alter the structure or sequence of DNA. These mutations can arise through several mechanisms that affect how DNA bases interact or replicate. Let’s explore the primary mechanisms responsible for induced mutations. Base Replacement by Base Analogs Base analogs … Read more
