Definitions [2]
Definition: Crossing Over
Mutual exchange of blocks of homologous genes between a pair of homologous chromosomes is known as crossing over.
Definition: Mutation
Mutation is a sudden change in one or more genes, or in the number or in the structure of chromosomes.
or
Mutation is a phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism.
