||Any numerical or structural change in the
usual chromosome complement of a cell or organism is called chromosome aberration.
||The random abnormal number of
chromosomes in the animals is called as
||A condition in which the organisms have
more than two complete sets of chromosomes is called polyploidy.
||Autopolyploids are polyploids in with
chromosomes derived from a single species.
||Allopolyploids are polyploids with
chromosomes derived from different species.
||The loss of part of chromosome is called
||The two genes that exist after a gene