一只具有高度进化性染色体的青蛙。
A frog with highly evolved sex chromosomes.
作者信息
Schmid M, Bachmann K
出版信息
Experientia. 1981 Mar 15;37(3):243-5. doi: 10.1007/BF01991633.
PMID:7238775
Abstract
Highly differentiated ZZ/ZW sex chromosomes and an exceptionally low genome size were found in the karyotypes of Pyxicephalus adspersus (Anura, Ranidae). The W-chromosome is considerably smaller than the Z-chromosome and consists to a very great proportion of constitutive heterochromatin. The DNA content of this species and the chromosome length have the lowest values determined in the Ranidae to date.
摘要
在非洲牛蛙（Pyxicephalus adspersus，无尾目，蛙科）的核型中发现了高度分化的ZZ/ZW性染色体以及异常低的基因组大小。W染色体明显小于Z染色体，且绝大部分由组成型异染色质构成。该物种的DNA含量和染色体长度是迄今为止在蛙科中测定的最低值。
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