Biology

Clones are organisms that are exact genetic copies. Every single bit of their DNA is identical. Principle objective of this lecture is to present on What is…

Lampbrush chromosomes are a special form of chromosome found in the growing oocytes of most animals, except mammals. It was given this name because it is…

Prime objective of this lecture is to present on Variation in Chromosome Number. Changes in chromosome number can occur by the addition of all or part of…

Basic objective of this lecture is to present on Variation in Structure of Chromosome.  The somatic (2n) and gametic (n) chromosome numbers of a species ordinarily…

General objective of this lecture is to present on Prokaryotic and Eukaryotic Chromosomes. The prokaryotes usually have only one chromosome, and it bears little morphological resemblance…

Basic purpose of this lecture is to present on Chromosomes. Chromosomes are the rod-shaped, filamentous bodies present in the nucleus, which become visible during cell division. They are…

Basic purpose of this lecture is to present on cause and effect of Mutation. Exogenous factors: environmental factors such as sunlight, radiation, and smoking can cause…

General purpose of this lecture is to present on Natural Selection Model. It is a tutorial based lecture. Natural selection is a key mechanism of evolution, and…

Major objective of this lecture is to present on Natural Selection in Action. Most mutations produce inferior versions of original gene. Some mutations allow adaption to a changing…

Principle objective of this lecture is to present on Evolution and Darwin. Evolution: The processes that have transformed life on earth from it’s earliest forms to the…

Anything that helps an organism survive in its environment is an adaptation. Main objective of this lecture is to present on Animal Adaptations. It also refers to…

Adaptation describes how a plant of animal is able to survive in various environments. Prime objective of this lecture is to present on Adaptation. Well adapted…