maize mutant phenotypes

asynaptic ear: synaptic failure in female resulting from unpaired meiotic chromosomes; poor seed set; ear is highly sterile with plump 3n and shriveled 5n endosperm kernels.

asynaptic synaptic failure: Pachytene photo shows large unpaired regions in 3 chromosomes and a small unpaired region on the long arm of chromosome 8 (from Miller 1963).