Thus, a larger short arm on acrocentric
chromosomes warrants further studies in all cases to rule out a translocation especially if it is seen in a patient with intellectual disability or congenital anomalies or both (5).
Tendency of acrocentric
regions to associate through satellite regions randomly.
Representatives of the two Amblycoryphini genera examined in this study, Paraplangia and Orophus, have a karyotype including 31 (male) or 32 (female) acrocentric
chromosomes with X0 (male) and XX (female).
A Robertsonian translocation occurs due to the breakage of two acrocentric
chromosomes (numbers 13, 14, 15, 21 and 22) or near the centromeres, with the subsequent fusion of their long arms (14,15).
(2003) because both are characterized by a high number of acrocentric
and pseudoacrocentric chromosomes.
In this case, parts of acrocentric
chromosomes are exchanged in a way in which the satellite region is lost and two chromosomes remain coupled, so that this embryo contains 45 chromosomes.
The karyotype with FN=68 is composed by six pairs of biarmed and 22 acrocentric
The number of metaphase chromosomes in all cells was 60 normal acrocentric
chromosomes (Figure 4).
Changes in chromosome morphology without apparent variation in GTG-banding patterns were observed between the metacentric AMO 5 and the acrocentric
NLA 1 and also between the metacentric AMO 9 and the acrocentric
F9 cells exhibit a pseudodiploid karyotype composed of 38 acrocentric
and 1 metacentric chromosomes, and a G1 and S phase of approximately 8 hours .
Karyotype (2n= 54, XY) with 17 pairs of acrocentric
and nine pairs of metacentric/submetacentric chromosomes, and an acrocentric
heteromorphic sexual pair (Oliveira et al., 2012a).
The other pairs are subtelocentric or acrocentric
. The chromosome pairs are the most prominent characteristics at the karyotype of the genus Fritillaria.