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The karyotype of amphioxus Branchiostoma belcheri tsingtauense (Cephalochordata)

Published online by Cambridge University Press:  10 January 2003

Changliu Wang ,
Shicui Zhang  and
Yongzhong Zhang
Changliu Wang
Affiliation:
Department of Marine Biology, Ocean University of Qingdao, Qingdao 266003, People's Republic of China
Shicui Zhang
Affiliation:
Department of Marine Biology, Ocean University of Qingdao, Qingdao 266003, People's Republic of China
Yongzhong Zhang
Affiliation:
Department of Marine Biology, Ocean University of Qingdao, Qingdao 266003, People's Republic of China
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Abstract

The chromosome number and karyotype of amphioxus Branchiostoma belcheri tsingtauense were studied using embryonic cells. The diploid chromosome number (2n) of B. belcheri tsingtauense is 36, and its karyotype 2n=36, 2st+34t, FN=36. This is the first report on the karyotype of the cephalochordate. Evidence suggesting the possible presence of a pair of sex-chromosomes in the amphioxus has been provided.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 83 , Issue 1 , February 2003 , pp. 189 - 191
Copyright
© 2003 Marine Biological Association of the United Kingdom

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