Crossing over: Difference between revisions
Jump to navigation
Jump to search
Explanation of crossing over |
(No difference)
|
Revision as of 21:35, 30 November 2011
Crossing over occurs once chromosomal replication has occurred in meiosis, (i.e. when all the bivalents have 4 chromatids.) It is the process whereby homologous chromosomes exchange sections of genetic material. Crossing over is essential to the survival of a population as it contributes to genetic variation.