물두꺼비의 核型에 관한 硏究

Karyological Studies of an Anuran Species, Bufo kangii Yoon

空氣乾燥法을 이용하여 B. kangii Yoon의 骨髓細胞에서 分裂像을 얻었다. 本種의 核型에 관한 특징은 다음과 같다. (1) 本種의 2倍體數는 22로서 큰 染色體 6쌍과 작은 染色體 5쌍으로 구분할 수 있다. (2) 모든 相同染色體는 metacentric 이었다. (3) 染色體에 第 2 收縮環이 없다. (4) 특이한 性染色體를 찾아볼 수 없었다.

Metaphases were obtained from the bone marrow cells of B. kangii Yoon, by means of direct air-drying technique. The karylogical characteristics of this species were as follows; 1) The diploid chromosome number was 22(2n=22) which might be divided into six large and five small homololgous chromosmes. 2) All homologous chromosomes of this species were metacentrics. 3) The secondary constriction was not found in all members of chromosomes. 4) There was no evidence for the existence of a specific sex chromosome pair in this species.