Recombination

Explanation

(1)Recombination is the phenimenon that is seen during sexual reproduction.(2)The closely linked genes on the same chromosomes do not separate but tightly linked to each other and hence they do not separate during meitotic crossing over.(3)Such genes are said to show low recobination.THe other types of genes which are not closely linked to each other may easily separate at the time of corossing over and hence are said to show high recobination.(4)These opinions were given morgen when he performed studies of dihybrid cross on drosophila.(5)He crossed yellow bodied white eyed female to brown bodied red eyed males.He observed that these two genes do not separate independently and do not yield 9:3:3:1 ratio as explained by mendel.(6)The genes for white eye and yellow body are tightly linked with each other and thus show only 1.3% recombination.Whereas white eyes and miniature wings show 37.2% recombination.