Abnormal chromosome behavior during meiosis in the allotetraploid of Carassius auratus red var. (♀)×Megalobrama amblycephala (♂).

ABSTRACT:

Background

Allopolyploids generally undergo bivalent pairing at meiosis because only homologous chromosomes pair up. On the other hand, several studies have documented abnormal chromosome behavior during mitosis and meiosis in allopolyploids plants leading to the production of gametes with complete paternal or maternal chromosomes. Polyploidy is relatively rare in animals compared with plants; thus, chromosome behavior at meiosis in the allopolyploid animals is poorly understood.

Results

Tetraploid hybrids (abbreviated as 4nRB) (4n=148, RRBB) of Carassius auratus red var. (abbreviated as RCC) (2n=100, RR) (♀)×Megalobrama amblycephala (abbreviated as BSB) (2n=48, BB) (♂) generated gametes of different size. To test the genetic composition of these gametes, the gynogenetic off

SUBMITTER: Qin Q 

PROVIDER: S-EPMC4236601 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature