History of Genetics
rubabMendel's laws: The laws of inheritance were derived by Gregor Mendel. He was 19th century Austrian monk. He was conducting plant hybridity experiments. Between 1856 and 1863, he cultivated and…
Colloidal System – Properties & Significance
sanaA heterogeneous mixture in which solute particles are larger than molecules or ions but cannot be seen by naked eye is called colloidal solution. A system which shows properties of…
Plant Systematics – introduction , definition , importance and simpson
sidraThe study of kinds and diversity of organisms and the evolutionary relationships among them is called systematics or taxonomy. The study systematics gives the order and relationships among thp organism.…
EVOLUTIONARY ONENESS AND THE DIVERSITY OF LIFE
abidaOrganic evolution is defined as "a change in population of organisms over time". The history Earth is a billion of years old. The earth was inhabited by different population during…
BUFFERS
The substance which resists change in pH is called buffer. Stable internal environment is maintained in animals. It requires a relatively constant pH of the body fluids. A strong acid…
pH: MEASURING ACIDITY AND ALKALINITY
The negative log (antilog) of hydrogen ion concentration is called pH. Hydrogen and hydroxyl ions affect the chemical reactions in the cells. Therefore, the concentrations of these ions in body…
ACIDS, BASES & SALTS
Acid An acid is a substance that releases hydrogen ions (in when dissolved in water. A hydrogen atom without its electron is only a proton. Thus an acid is a…
Cell : The Fundamental unit of life
Cell is the lowest level of organization. It is capable of performing all the activities Df life. The cell has a very special place in the hierarchy of biological organization.…
Applications of Genetics
Genetics has scope in following fields: Genetics as basis of biological sciences Genetics provides a foundation for biological studies. Law of inheritance helps its to understand principles of embryology, population,…
SI units of expressing concentration of solutions
The concentration of a solution is expressed by following methods: Percentage The volume or weight (concentration) of some solute is expressed in the percentage. For example 10 gin of sodium…