Genetics Archive

Genetic Recombination

The production of new allele combinations is formally called recombination. Crossovers are one mechanism for recombination, and so is independent assortment. Recombination is observed in a variety of biological situations, but for the present let’s define it in relation to …

Linkage

The genes which reside on the same chromosome are said to be linked, and this phenomenon is called linkage. Linkage groups: All those genes which are located on the same chromosomes constitute a linkage group. For example, there are four …

Tissue Culture Importance

  Plant tissue culture is one of the most rapidly growing areas of biotechnology because of its high potential to develop improved crops and ornamental plants. With the advances made in the tissue culture technology, it is now possible to …

Plant Tissue Culture Techniques

CALLUS CULTURE Callus is amorphous mass of loosely arranged thin walled parenchyma cells developing from proliferating cells the parent tissue. Plants are regenerated by forming a normal shoot, root and embryoids ultimately forming a plant. Importance: Plant breeding: Callus culture …

Plant Tissue Culture

Plant tissue culture broadly refers to the in vitro cultivation of plants, seeds and various parts of the plants (organs, embryos, tissues, single cells, protoplasts). The cultivation process is invariably carried out in a nutrient culture medium under aseptic conditions. …

Meiosis

A special type of cell division, which reduces the number of chromosomes to half in daughter cells as compared to parent cell. It always occur in diploid cells (2n) or tetraploid cells (4n). In animals it takes place at the …