What is the importance of crossing over in the process of evolution?

Answer 1

Gentic variation. If every set of DNA was equal, there would be no vartiation and no evolution. Fortunately, crossing over is a common process that helps with genetic variation so that no two people, animals, or plants have the same DNA. Crossing over only really occurs in eukaryotes, so this is why it helps with the evolution of plants and animals. "Sexual reproduction and recombination of linked genes (crossing over) are along with mutations the main instruments of biological variability. Sexual reproduction allows many combinations between genes situated in different chromosomes. Crossing over, however, is the only means to provide recombination of alleles located in a same chromosome. Crossing over probably emerged and has been maintained by the evolution because of its importance for the biological diversity. " See: http://en.wikipedia.org/wiki/Chromosomal_crossover

Answer 2

Crossing over is the genetic process of two homologous chromosomes exchanging genetic material. This results in recombinant chromosomes. These chromosomes are more genetically diverse due to the crossing over and result in more variety for future generations in evolution.

Answer 3

Crossing over in the process of evolution creates offspring that has better genetic combinations that leads to new and better generations. These produce new generations that are equipped with new combination of traits ensuring an evolution that is better.

Answer 4

New genetic combinations are formed and some of these new combinations of genes are better adapted to the environment hence organisms carrying these genes live better than their parents.