AGB 121: Principles of Animal Genetics and Population Genetics (2+1)

INVERSION

• An Inversion is a reversal in the order of a segment of a chromosome within the chromosome, or a gene.
• It arises by breakage of the chromosome followed by the joining of pieces in the reverse order.
• Change in the linear order of genes or a series of nucleotides in the gene by rotation of a section of a chromosome through 180 degrees.

 To view "Inversion Mutation Animation"

• If the centromere lies within the inverted region, the inversions are known as pericentric inversions.
• If centromere lies outside the inverted segment, the inversion is called paracentric inversion.
• Inversion effectively suppresses crossing over.