See Also: four-strand crossing over(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Crossing over(medicine)
Crossing over(health)
crossing(dictionary)
crossing(dictionary)
railroad crossing(dictionary)
level crossing(dictionary)
pelican crossing(dictionary)
grade crossing(dictionary)

four-strand crossing over (medicine)


four-strand crossing over
Crossing over with both strands of DNA from each sister chromatid, so that both strands from one chromatid are exchanged for both strands on the other. This is different from the usual case where only one of the two DNA strands on one sister chromatid is exchanged for the one matching strand (of the two strands) on the other sister chromatid.