Structural Abnormalities - II
Ring
formation:
Types of abnormalities: (continued)
Breakage and re-union
of ends with or without loss of material:
Insertions:
Movement of a segment
of chromosome from one area to another area of same or different chromosome
Translocations:
Breakage in two
chromosomes with each broken piece re-uniting with another chromosome
Duplications:
Partial trisomy due to
unbalanced insertion or crossing-over in
meiosis or mitosis