Respuesta :
Explanation:
Crossing over occurs in prophase-I during meiosis in which the exchange of genetic material takes place between non-sister chromatids of homologous chromosomes. As a consequence of this, each chromosome contains a new combination of genes.
After that, at the stage of anaphase-I, alleles of different genes get separated independently of one another into gametes. It results in the gametes with unique combination of chromosomes causing diversity in the traits.
The exchange of genes during the cell cycle is called crossing over. Crossing over helps to make the new character in the future generation.
Crossing over is helpful because of the following:-
- New character
- New variation.
Crossing over occurs at the diplotene stage of prophase in meiosis - I. The position of the crossing over is random so that they can mix the variety of genes and form a new character.
These random distributions of chromosomes help to make a new sequence after the cutting and join together with the help of DNA ligase.
For more information, refer to the link:-
https://brainly.com/question/18824252
