Disorder of Immune System Allergy or Hypersensitivity It is the hypersensitiveness of a person to some foreign substances called allergens coming in contact with or entering the body. It is the exaggerated response of the immune system to certain antigens present in the environment. The substances to which such an immune response is produced are … Read more
Microbes in industrial products Production of beverages and antibiotics on an industrial scale, is done by growing microbes in very large vessels called fermentors. Fermentors (a) Fermentors Beverages (i) Yeast species used in alcoholic fermentation are:- Saccharomyces cerevisiae commonly called Brewer’s yeast. Ellipsoidens- Wine … Read more
Ethics includes a set of standards by which a community regulates its behaviour and decides as to which activity is legitimate and which is not. Therefore, bioethics, may be viewed as a set of standards that may be used to regulate our activities in relation to the biological world. The manipulation of living organisms by … Read more
Sericulture is the breeding and management of insects for the production of silk. All the four varieties of natural silk, mulberry, tassar, eri and muga, are produced in India. India ranks third among the mulberry silk producing countries of the world. mulberry silk Silks are of two main types, mulberry silk or cultivated silk and … Read more
Introduction Lactation is a complex physiological process that entails the production and secretion of milk from the mammary glands, primarily for the nourishment of newborns. This process is not only vital for the survival and development of mammalian offspring but also a fascinating example of the intricate interplay between hormones, anatomy, and behavior. The initiation … Read more
Introduction Population growth has been one of the most significant phenomena shaping human history, influencing socio-economic, environmental, and political landscapes. As we journey through the 21st century, understanding the intricacies of population dynamics becomes ever more critical, especially as we face unprecedented global challenges Historical Context and Causes Historically, population growth has been driven by … Read more
Introduction As traditional breeding techniques failed to keep pace with demand and to provide sufficiently fast and efficient systems for crop improvement, therefore another technology called tissue culture got developed. (1) what does tissue culture mean? Plant tissue culture is the maintenance and growth of plant cell, tissue s and organs on a suitable culture … Read more
Introduction Animals that have had their DNA manipulated to possess and express an extra (foreign) gene are known as transgenic animals. The genome of their animals has been changed and they can carry genes from other species. Examples of transgenic animals include rats, rabbits, pigs, sheep, cow, monkey and fish although over 95% transgenic animals … Read more
Introduction It is technique used for determining nucleotide sequences of certain areas of DNA which are unique to each individual. DNA fingerprinting can distinguish one human being from another with the exception of monozygotic twins, 99.9 percent of base sequence. The differences occur not only in genes but also in repetitive DNA DNA fingerprinting involves … Read more
Introduction:- The sex determination in honey bee is based on the number of sets of chromosomes an individual receivers. An offspring formed from the union of a sperm and an egg develops as a female (queen or worker), and an unfertilized egg develops as a male (drone) by means of parthenogenesis. This means that the … Read more