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Table 1 Synapsed or unsynapsed quadrivalents and their binding to the XY chromosomes

From: Synaptic configuration of quadrivalents and their association with the XY bivalent in spermatocytes of Robertsonian heterozygotes of Mus domesticus

Rb heterozygote

Male 2n = 38

Examined spermatocytes

Synapsed quadrivalents

Unsynapsed quadrivalents

Bound to XY

Not-bound to XY

Bound to XY

Not-bound to XY

Animal 1

16

0

6

8

2

Animal 2

16

0

7

9

0

Animal 3

13

0

5

7

1

Animal 4

15

0

8

7

0

Total

60

0%

26 (43%)

31 (52%)

3 (5%)