Biodiversity

Our planet, earth, is occupied by diverse kinds of living organisms. They live in various environments. The world is estimated to have 5 to 30 million species of living organisms. At present about 2.5 million species of living organisms have been given scientific names. Over 1.5 million of them are animal species and out of …

Green Business and Green Design

Businesspeople and consumers are increasingly aware of the unsustainability of producing the goods we use every day. Recently, a number of business innovators have tried to develop green businesses, which produce environmentally and socially sound products. Environmentally conscious, or “green,” companies, such as the Body Shop, Patagonia, Aveda, Malden Mills, Johnson and Johnson, and others, …

Tips for Staying Healthy

Eat a balanced diet with plenty of fresh fruits, vegetables, legumes, and whole grains. Wash fruits and vegetables carefully; they may have come from a country where pesticide and sanitation laws are lax.  Use unsaturated oils, such as olive or canola, rather than hydrogenated or semisolid fats, such as margarine.  Cook meats and other foods …

Public Awareness on Environment

As the earth’s natural resources are dwindling and our environment is being increasingly degraded by human activities, it is evident that something needs to be done. We often feel that managing all this is something that the Government should do. But if we go on endangering our environment, there is no way in which the …

Importance of Environmental Education

Environment is not a single subject. It is an integration of several subjects that include both Science and Social Studies. To understand all the different aspects of our environment we need to understand biology, chemistry, physics, geography, resource management, economics and population issues. Thus the scope of environmental studies is extremely wide and covers some …

Definition & scope – Environmental Studies

Definition Environmental studies deals with every issue that affects an organism. It is essentially a multidisciplinary approach that brings about an appreciation of our natural world and human impacts on its integrity. It is an applied science as its seeks practical answers to making human civilization sustainable on the earth’s finite resources. Its components include …

Pleiotropy

In general, one gene affects a single character. But many genes are known to affect more than one character. Such genes are called pleiotropic genes and the condition is called Pleiotropy. An example of a gene in human beings is the recessive gene s ( sometimes denoted as Hbs) which produces sickle cell anemia in …

Modified dihybrid ratios with codominant and lethal alleles

The classical phenotypic ratio resulting from the mating of dihybrid genotypes is 9:3:3:1. This ratio appears whenever the alleles at both loci display dominant and recessive relationships. The classical dihybrid ratio may be modified if one or both loci have codominant alleles or lethal alleles. A summary of these modified phenotypic ratios in adult progeny …

Mendel’s Hypothesis

Mendel studied the pattern of inheritance using several true-breeding varieties of garden peas. He concentrated on transmission of seven easily identified traits, and crossed plants showing alternate aspects of each of these(e.g., tallness and dwarfness; yellowness or greenness of peas; smooth; rounded versus crinkled versions of seeds; and so on). Mendel’s application of probability methods …

Rieger Syndrome

Definition Rieger syndrome is a rare disorder characterized by absence and/or malformation of certain teeth, mild craniofacial (relating to the head and the face) abnormalities, and various eye abnormalities. The eye abnormalities, referred to as Rieger eye malformations, may be present separately or as a part of Rieger syndrome. Description First characterized by Herwigh Rieger, …