EVERYDAY SCIENCE

Detailed explanation-1: -If a cell’s chromosomes are an exact multiple of 23 (46, 69, 92 in humans), those cells are referred to aseuploid. Polyploid cells are euploid cells with more than the normaldiploid number of 46 (2n) chromosomes: 3n, 4n.

Detailed explanation-2: -Polyploids are species in which three or more sets of chromosomes coexist. Polyploidy frequently occurs in plants and plays a major role in their evolution. Based on their origin, polyploid species can be divided into two groups: autopolyploids and allopolyploids.

Detailed explanation-3: -An organism with any multiple of the diploid number of chromosomes is said to be polyploid.

Detailed explanation-4: -Polyploidy is the heritable condition of possessing more than two complete sets of chromosomes. Polyploids are common among plants, as well as among certain groups of fish and amphibians. For instance, some salamanders, frogs, and leeches are polyploids.

Detailed explanation-5: -Changes in chromosome number can occur by the addition of all or part of a chromosome (aneuploidy), the loss of an entire set of chromosomes (monoploidy) or the gain of one or more complete sets of chromosomes (euploidy). Each of these conditions is a variation on the normal diploid number of chromosomes.