[Studies on chromosomes of periodic Brugia malayi].
A study was carried out on the chromosomes of periodic Brugia malayi using air drying preparations of testis, ovary and uterus. The results showed that the oogonial metaphase consisted of 4 pairs of small-sized autosomes and one pair of large-sized sex-chromosomes, that the spermatogonial metaphase consisted of 4 pairs of small-sized autosomes and one large-sized and one medium-sized sex-chromosome, the oocytes at diakinesis had 5 bivalents, the secondary spermatocytes 5 univalents and the fertilized eggs 10 chromosomes. The above-mentioned findings revealed that the chromosome number was 2n = 10 and that the sex-determining mechanism was of the XY-XX type in this type of B. malayi.
Wang
P P
PP
Institute of Parasitic Diseases, Zhejiang Academy of Medical Science.
Deng
S S
SS
Xu
R Z
RZ
D000818:Animals; D002009:Brugia / Q000235:genetics*; D002875:Chromosomes; D005260:Female; D005849:Gerbillinae / Q000469:parasitology; D008297:Male; D008540:Meiosis; D008938:Mitosis; D012730:Sex Chromosomes