Devolution describes a process through which federal government is downsized by delegation for the implementation of programmes to local and state government. Devolution may differ from federalism because subnational authority in the devolved powers may be reversible or temporary residing ultimately with the central government.
Crossing over – often, the sister homologous chromosomes of a cell exchange genetic material through recombination of genes.
Independent assortment/random fertilization – there are numerous variety of ways that the chromosomes of the gametes can combine, after meiosis, through fertilization to form a zygote
Mutation – on rare occasion, there is a slight and random change in the genes of a gametic cell caused by environmental factors.
