PMID- 9474904
OWN - NLM
STAT- MEDLINE
DCOM- 19980331
LR  - 20190607
IS  - 0018-0661 (Print)
IS  - 0018-0661 (Linking)
VI  - 127
IP  - 3
DP  - 1997
TI  - New karyotypes of two related species of Oligoryzomys genus (Cricetidae, 
      Rodentia) involving centric fusion with loss of NORs and distribution of 
      telomeric (TTAGGG)n sequences.
PG  - 217-29
AB  - Comparative cytogenetics studies based on conventional staining, CBG, GTG, 
      RBG-banding, Ag-NOR staining, fluorescence in situ hybridization (FISH) using 
      telomere probes, length measurements, and meiotic data were performed on two 
      related but previously undescribed cricetid species referred to as Oligoryzomys 
      sp. 1 and Oligoryzomys sp. 2, respectively, from Pico das Almas (Bahia: Brazil) 
      and Serra do Cipo (Minas Gerais: Brazil). Oligoryzomys sp. 1 had 2n = 46 and 
      Oligoryzomys sp. 2 had 2n = 44, 44/45. Our banding data and measurements as well 
      as FISH results support the hypothesis that the difference between the diploid 
      numbers occurred by centric fusion events. The karyotypes had conspicuous and 
      distinguishable macro- and micro-chromosomes, and we suppose that the largest 
      pairs (1, 2, and 3) have evolved from a higher diploid number because of 
      successive tandem fusion mechanisms.
FAU - Silva, M J
AU  - Silva MJ
AD  - Departamento de Biologia, Instituto de Biociencias, Universidade de Sao Paulo, 
      Brazil.
FAU - Yonenaga-Yassuda, Y
AU  - Yonenaga-Yassuda Y
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Hereditas
JT  - Hereditas
JID - 0374654
SB  - IM
MH  - Animals
MH  - Arvicolinae/classification/*genetics
MH  - Chromosome Banding
MH  - Female
MH  - In Situ Hybridization, Fluorescence
MH  - Karyotyping
MH  - Male
MH  - Meiosis
MH  - Nucleolus Organizer Region/*chemistry/genetics
MH  - Telomere/*chemistry/genetics
EDAT- 1997/01/01 00:00
MHDA- 1998/02/25 00:01
CRDT- 1997/01/01 00:00
PHST- 1997/01/01 00:00 [pubmed]
PHST- 1998/02/25 00:01 [medline]
PHST- 1997/01/01 00:00 [entrez]
AID - 10.1111/j.1601-5223.1997.00217.x [doi]
PST - ppublish
SO  - Hereditas. 1997;127(3):217-29. doi: 10.1111/j.1601-5223.1997.00217.x.