Biotechnology
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Biotechnology At home we prepare food items such as yoghurt (curd), cake, bread, idli and dosa etc. by the action of tiny microorganisms, the bacteria and fungi. Brewers use yeast…
Genetic counselling
Genetic Counselling You have earlier learnt about dominant and recessive genes. If a child receives a dominant gene from one parent and its recessive from the other parent (heterozygous condition)…
Transgenic, Microbes, Plants and Animals
Transgenic Microbes, Plants and Animals Also called genetically modified organism (GM organisms), transgenic organisms contain in their genetic makeup foreign genes, that is genes from another species or another kind…
Importance of Genetic Engineering
Importance of Genetic Engineering Genetic engineering or rDNA technology can be used for various purposes: To manufacture important compounds like vaccine, hormones, vitamins, antibodies etc. The production of these substances…
Recombinant DNA Technology
Recombinatnt DNA Technology One of the major applications of genetics is in genetic engineering which is also called recombinant DNA technology. In this technique the desired gene which is a…
Genetics & Society
Genetics & Society You have learnt from earlier lesson of this unit that genetics is the science of heredity and variation. After Mendel’s work was rediscovered in 1900, genetics progressed…
Genes & Protein Synthesis
Genes & Protein Syntesis Genes & Protein Syntesis – The genes of an individual is its genotype, and the expression of genes results in the phenotype. For the study of…
Molecular Inheritance & Gene Expression
Molecular Inheritance & Gene Expression A cell contains the nucleus, nucleus contains chromosomes which bear genes. Genes carry the hereditary information. A zygote has the information for development and differentiation…
Mitochondrial Inheritance as a case of Maternal Inheritance
Mitochondrial Inheritance as a case of Meternal Inheritance Apart from the nucleus, mitochondria and chloroplasts also possess DNA. Till now you have studied about genes on the chromosomes present in…
Chromosomal Theory of Inheritance
Chromosomal Theory of Inheritance It was observed by Sutton and Boveri in 1902 that 1. Maternal (from mother) and paternal (from father) characters come together in the progeny which is…
Important terms in Genetics
Important terms in Genetics Factor: the unit responsible for the inheritance and expression of a particular character. Now replaced by the term gene. Gene: It is particular segment of a…
