Cytotaxonomy– Class 11 | Chapter – 3 | Short Notes Series PDF

Cytotaxonomy: It is the system of classification of organisms which is based upon the cytological information of their cells. These includes:

1. Chromosome number.
2. Chromosome morphology.
3. Behaviour of chromosomes.

The role of cytotaxonomy is very important in taxonomic studies. Cytotaxonomy is more significant than physiological taxonomy because it is the comparative study of chromosomes at the molecular level. Small changes in chromosomes can be detected among the individual. Chromosomes are constituted by the DNA, variation in the DNA leads to change in chromosome which ultimately causes variation among the individual, species, genus and everything.

Cytotaxonomy

• It is a classification based on comparative cytological structure, the number of chromosomes, and the shape and meiotic behavior of chromosomes.
• In order to understand the interrelationship between different organisms the most important parameter is the chromosomal configuration.
• It has wide application in classification of plants as one of the lead parameters, e.g., The chromosomal number is a reliable trait for identifying grasses.

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By Team Learning Mantras