Meiosis in
Sordaria fimicola
Kingdom: Fungi
Phylum: Ascomycota
• Know how to identify crossing
over (recombinants).
• Know how to determine map
distances (between
centromere and gene as well
as between genes).
Perithecium (fruiting body)
breaks open to release asci
Sordaria fimicola
• bears its sexual (meiotic) ascospores in a
sac called an ascus
• asci are borne in a special fruiting structure
called a perithecium
Sordaria life cycle
mating
meiosis
Be able to draw
out different
possible
recombination
events
What you might observe in your asci:
http://www.biologyjunction.com/sordaria_lab_pictures.htm
http://www.biologyjunction.com/sordaria_lab_pictures.htm
Be able to identify recombinants.
Map Units
http://www.phschool.com/science/biology_plac
e/labbench/lab3/analysis2.html