It is the division of cytoplasm.
It is the division of the nucleus.
Chromosomes are thread like structure appear at the time of cell division. They are found in specific numbers, made up of chromatin material in eukaryotic cell. They contain heredity units called Genes.
The chromosomes are of different types, depending upon position of centromere. These types are:
1. Metacentric: Chromosomes with equal arms.
2. Sub-meta centric: Chromosomes with un equal arms.
3. Acrocentric or sub-telocentric: Rod like chromosomes with one arm very small and other very long. The centromere is subterminal.
4. Telocentric: Location of centromere at the end of chromosomes.:
It is the region of chromosomes at which spindle fiber is attached during cell division.
The homologous chromosomes which are in contact at one or more points are called chiasmata.
A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division.
The pairing of homologous chromosomes is known as synapsis.
The paired homologous chromosomes are known as bivalent.
Each bivalent is composed of four chromatids and therefore is known as tetrads.
It is the process in which non-sister chromatids exchange their segments of homologous chromosomes.