Notes on Meiosis: Features, Division and Significance! Notes # Features of Meiosis: Important features of meiosis are presented below: Two spindle using divisions which reduce the chromosome number from diploid to haploid constitute meiosis. The main function of meiosis is to produce gametes in an organism. 1. Meiosis results in formation of four daughter cells from a single mother cell [...]
The following points highlight the four main types of structural changes in chromosomes. The types are: 1. Deletion 2. Duplication 3. Translocations 4. Inversions. Structural Change: Type # 1. Deletion: Deletion refers to loss of a portion of segment from a chromosome. It is also known as deficiency. Deletions have been observed in Drosophila, maize, tomato, wheat and several other [...]
The following points highlight the two main types of heteroploidy. The types are: 1. Euploidy 2. Aneuploidy. Heteroploidy: Type # 1. Euploidy: The change in chromosome number which involves entire set is called euploidy. In other words, euploidy refers to numerical change in entire genome. The somatic chromosome number of an euploid individual is exact multiple of basic number of [...]