In honeybees,haplodiploidy system is used to see the sex of the offspring. The drones (males) are completely obtained from the queen, specifically their mother. The diploid queen has 32 chromosomes in total whereas the haploid drones have 16 chromosomes. Drones create sperm cells that have their whole genome, so the sperm are all genetically … Read more
Surface Chemistry: Coagulation Physical and chemical processes to induce collisions and growth of particles, and to remove some soluble contaminants: Coagulation: Formally, means making particles “sticky” (rapid mix step); colloquially, also refers to forming new particles that collect dissolved contaminants Flocculation: Collisions among sticky particles (slow mix step), to converge and form fewer, larger and … Read more
In birds the sex chromosomes are controlled genetically and the structure of determining an offspring is contradictory to that in mammals: the male is the one with homogametic sex (ZZ) where the female is heterogametic (ZW). THESE sex chromosomes are designated as Z and W. The males are ZZ on the other hand the … Read more
Plants create seeds that may grow into new plants, however if the seeds simply fall to the bottom beneath the parent plant, they may not get enough sun, water or nutrients from the soil. Because plants cannot walk around and take their seeds to different places, they need developed different strategies to disperse (move) their … Read more
Sanctuaries and the wildlife are the two aspects of the same coin. The main aim of the sanctuary is for the preservation of the wildlife. The sanctuaries are the geographical territories that are reserved for the preservation of biodiversity. No limits are confined to the wildlife sanctuaries. It is open to be visited by … Read more
The term ringworm is derived from early beliefs that the infection was brought by a worm and it refers to fungal infections on the skin surface. Few fungi produce a rash of scaly spots on the skin surface but many don’t. A good diagnosis is best for a successful treatment. Causes of ringworm Ringworm … Read more
Red Data Book also knows as Red Data is a state document for archiving rare and endangered species of plants, animals, and fungi. This book has been arrogated by Russia to validate the agreement on rare and endangered species protection. History It is originally known as the Red Data Book of Russia. This book … Read more
The Ramsar sites are the wetland sites which are designated for the international importance under the Ramsar convention. The convention on the wetlands is known as the Ramsar convention. The Ramsar Convention is the international treaty which is used for the sustainable use and the conservation of the wetlands. Ramsar Convention is named in … Read more
Surface Chemistry: Electrophoresis Electrophoresis means “to carry with electricity”. It is a method where charged molecules in solution, migrate in response to an electrical field. Their rate of migration through the electrical field, depends on the strength, net charge, size, and shape of the molecules, along with the ionic strength, viscosity, and temperature of the … Read more
Introduction. For a deeper understanding of radioactive waste management, basic knowledge about what and how radioactive waste is created is fundamental. Radioactive waste, or otherwise called nuclear waste, is the waste material that contains radioactive material. This type of waste is usually a byproduct of processing plants, research facilities, and hospitals; however, it is … Read more