The haploid number of chromosomes in wheat is 7. The new variety has 42 chromasomes.

The haploid number of chromosomes in wheat is 7. The new variety has 42 chromasomes. What is the name of the mutation? What signs will this variety have in comparison with the wild one, in which 2n = 14?

1) The set of chromosomes in the new variety is 42/7 = 6 times higher than the haploid one, in other words, its chromosome set is 6n. Such a mutation, in which there is a multiple increase in the set of chromosomes, is called polyploidy.

2) Due to polyploidy, such a plant will have more of the same genes, respectively, more efficient expression of these genes will occur. Polyploids have larger seeds, that is, they give a more bountiful harvest, which gives them an advantage over “classic wheat”.