Table 1.

Comparison of chromosomes and nuclear meiotic movements in different species.

	S. Cerevisiae	S. Pombe	C. Elegans	D. Melanogaster	D. Rerio	M. Musculus
Chomosome number (2n)	32	6	12	8	50	40
Localisation of initial homologous pairing	Centromere [4,5]	Arms [6,7] Centromeres [8,9,10]	Pairing Center [11,12,13,14]	X-Y rDNA Centromeres [15] Euchromatic Loci [15,16]	Sub Telomere [17]	♂ Telomeres [18] ♀ Distal/Interstitial Regions [19]
Timing of initial homologous pairing	Zygotene [4]	Prophase [20]	Transition Zone [21]	Mitotic Region [15,16]	Leptotene/Early Zygotene [17]	Premeiotic S-phase [22]/Early Leptotene [23,24]
Meiotic DSB dependent synapsis	Yes [25]	NA	No [26]	No [27]	Yes [17]	Yes [22,23,24]
Type of bouquet	Telomeres [28]	Telomere [20]	Half-moon Shape [21,29,30]	Centromere Cluster [31,32]	Centromere Telomere [17]	Centromere [18,33] Telomere [34]
Bouquet stage	Lept/Zyg Transition [28]	Prophase [20]	NA	NA	Leptotene [17]	♂ Lept/Zyg Transition [34,35] ♀ Zyg/Pachytene Transition [19]
Chromosome movement type	Coordinated-[36,37] autonomous [37,38]	Horsetail Movements [20]	Autonomous [30]	Nuclear Rotation [39]	ND	Nuclear Rotation Autonomous [35]
Chromosome movement stages	Prophase [36,40]	Horsetail Stage [20]	Leptotene-zygotene [41,42]	8-cell cyst [39]	ND	Leptotene-zygotene [35]
Force-inducing cytoskeleton	Actin [36,43,44]	Microtubules [45]	Microtubules [46]	Microtubules [39]	Microtubules? [47]	Microtubules [34,35]
Speed (nm/sec)	300–500 [37,44]	83 [20]	125–400 [41,42]	300 [39]	ND	109–120 [35]
Adaptors to nuclear envelope	Ndj1p/Csm4p [36,43,44]	Taz1/Rap1 Bqt1/2 [48,49,50]	HIM-8/ZIM-2/ZIM-1/ZIM-3 [51,52]	ND	ND	TERB1-TRF1 [53,54] TERB2-MAJIN [55].
LINC	Mps3p/Mps2p [44,56,57]	Sad1/Kms1/Kms2 [58,59,60]	SUN-1/ZYG-12 [46]	Klarsicht, Klaroid [39]	ND	SUN1/SUN2/ [61,62] KASH5 [63]
Motors	ND	Dynein [48,49,50]	Dynein [46]	Dynein [39]	ND	Dynein [34,35]
Other regulators	ND	MAP/Pat1 [20,50,64]	CHK-2/PLK-2 [65,66]/HAL-2/HAL-3 [67,68] FKB-6 [69] MRG-1 [70,71,72] PPH-4.1 [73]	ND	ND	Rad21 [23] CDK/Cdk2 [74]/ SpeedyA [74,75].