Question

What does recombining genetic variation mean. How does it happen?

Answer 1

Genetic variation is nothing but differences in the genes (DNA of an allele) between individuals. It can be generated by mutations, random mating or fertilization, and recombination between homologous chromosomes during meiosis (In pachytene stage of prophase-l, crossing over will occur between non-sister chromatids of homologous chromosomes that produce genetically variant alleles in the progeny). In the recombinant genetic variation, alleles will be reshuffled between homologous chromosomes of an organism by recombination that results in the genetic variation in offsprings (production of a new combination of alleles) to the parents.