Finding the Correct Partner: The Meiotic Courtship
Figure 3
Arrangement of rye homologous chromosome pair 5R added to wheat at early meiosis. (a) Nucleus at leptotene showing highly compacted rye chromosomes located in separate territories. Chromosomes show the Rabl orientation with centromeres (c) and telomeres (tel) in opposite poles. Telomeres of wheat chromosomes, also labeled, are arranged in groups denoting the initiation of bouquet organization. (b) Nucleus at early zygotene showing partial synapsis of the long arm (LL) while the short arm ends (S) remain separate. The chromosome length is increased relative to leptotene, which causes that chromosomes span the entire nucleus. The centromere of one chromosome is out of focus. Bar represents 10 μm.
