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

Chrosomal aberrations

CHROMOSOMAL ABERRATIONS

• Different cells of the same body and different individuals of the same species have, as a rule, specific number of chromosomes in pairs (2n).
• But in rare instances, variations in the chromosome number, structure, size or gene arrangement of chromosome called ‘ chromosomal aberrations ’ can occur during cell division.
• Such variations may produce phenotypic changes, changes in the expected genetic ratios or changes in the linkage relationships of certain genes.