Myrmecia croslandi (Bulldog ants, male n=1): Imai (2016)
Myrmecia croslandi (Bulldog ants)
mitotic chromosomes
male n=1, female 2n=2
https://gyazo.com/3ac718071af695053b31e446f33bd3d5
Figure 35
Polymorphic karyotypes of Mymecia croslandi
worker 2n=3
worker 2n=4
https://gyazo.com/cf351a3c937260fea9fb09cd2be2fbd1
Figure 36
This paper describes how to prepare the samples to observe mitotic chromosomes in Bulldog ants.
1: When thinking the difference between n=1 and n=2 (or 2n=2 and 2n=4), interlocks between 2n=4 at meiosis seem a big issue. Can we observe many interlocks in 2n=4 chromosomes at meiosis?
2: According to the crossover interference, the ant which has 2n=2 chromosomes can obtain only several (1-3?) crossover at meiosis. Is it enough for bulldog ants to escape from Muller's rachet? Or do bulldog ants have some ways to enhance the occurence of crossovers?