Mutagens

Mutagens Any extracellular physical or chemical factor which can cause mutations or increase the frequency of mutations in organism is termed as mutagen. In other words, the specific factors …

Polyploidy

Polyploidy Polyploidy is the state of a cell or organism having more than two sets of chromosomes. There are mainly three different kinds of polyploids, namely, autopolyploids, allopolyploids and …

Euploidy

Euploidy In euploidy the number of chromosomes is the multiple of the number of chromosomes in a single set. Euploids can be monoploid, diploids or polyploids. Monoploidy and Haploidy …

Aneuploidy

Aneuploidy Aneuploidy means presence of chromosome number which is different than a multiple of basic chromosome number. In other words, aneuploidy is the presence of an abnormal number of …

Chromosomal Aberrations

Chromosomal Aberrations Chromosomal aberrations are abnormalities in the structure or number of chromosomes which are often responsible for genetic disorders. The structural changes in the chromosomes include: Deletion or …

Crossing Over

Crossing Over Crossing over may be defined as the recombination of linked genes brought as a result of interchange of corresponding parts between the chromatid of a homologous pair …

Linkage

Linkage The phenomenon of inheritance of genes together and to retain their parental combination even in the offspring is termed as linkage. Mendel’s principle of independent assortment shows exception. …