Table 2 Comparison of autosomal aneuploidy types.

From: Whole genome analysis reveals aneuploidies in early pregnancy loss in the horse

Phenotype (n)

Aneuploidy type

Chromosome size (Mb)

Genes per chromosome

Maternal age (years)

EPL (1)

Trisomy 1

188.3

1683

4a

EPL (1)

Trisomy 3

121.4

883

6a

EPL (1)

Trisomy 15

92.9

664

19a

EPL (2)

Trisomy 20

65.3

738

13a and 19a

EPL (1*)

Trisomy 24

48.4

453

3a

EPL (1)

Monosomy 27

40.3

232

10a and 19a

EPL (2)

Monosomy 31

26

154

10a

EPL (1*), LB (1)

Trisomy 23

55.6

294

3a, #b

LB (1)

Trisomy 26

43.1

232

3c

LB (3)

Trisomy 27

40.3

232

5d, 26e, #f

LB (1)

Trisomy 28

47.3

388

14g

EPL (2), LB (2)

Trisomy 30

31.4

185

9a, 19a, and 23c

LB (1)

Trisomy 31

26

154

26h

  1. Those unique to our study were larger and contained more genes than those also reported in live born equines. Mares of a variety of ages were affected with an aneuploidy pregnancy. EPL early pregnancy loss, LB live born, *same conceptus trisomic for two different chromosomes, #unreported mare age.
  2. aThis study, 26,24,22,21,23,27,25.