How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
(4) Recombination is the most common mechanism of genetic veriation in the population of a sexually reproducing organism. It involves the exchange of genetic material either between multiple chromosomes or between different regions of the same chromosome. This mechanism is generally mediated by homologous chromosomes, during meiosis, i.e. formation of gametes or germ cells.