Crossing-Over
Science / Biology / Crossing-Over
Related Words
Crossing-Over: During the first meiotic prophase, the process in which part of a chromatid is physically exchanged with another chromatid to form chromosomes with new allele combinations.
Sister Chromatids: Chromatids joined by a common centromere and carrying identical genetic information (unless crossing-over has occurred).
Chiasma: The site where the exchange of chromosome segments between homologous chromosomes takes place (crossing-over) (pl.: chiasmata).
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