In this article we will discuss about the Mendel’s Principles. Also learn about its major limitations. Actually, the basic principles of heredity was formulated by Mendel in 1866 but under- standability and confirmation of Mendel's prinÂciples of heredity was clear to us after the rediscovery of Mendel's laws in 1900 by three geneticists : Correns, de Vries and Tschermark independently. [...]
In this article we will discuss about the features and effects of gene. Essential Features of Gene: Prior to 1940, recombination was not believed to occur within genes. The genes in a chromosome were considered analogous to beads on a string. Recombination was believed to occur only between the beads or genes. The gene was not considered subdivisible. But, on [...]
The following points highlight the top two models of chromosomes. The models are: 1. Multiple Strand Models 2. Single Strand Models. Model # 1. Multiple Strand Models: a) Simple Multi-Stranded Model: According to this model the chromosome consists of 64 double helices of DNA arranged in a parallel number, and twisted together like the strands of a rope. The difficulty [...]