Regular Segregation of Seven Asynaptic Sex Chromosomes in the Male ofAsphaera DanielaBechyné (Coleoptera, Alticidae)
Open Access
- 1 January 1968
- journal article
- research article
- Published by Firenze University Press in Caryologia
- Vol. 21 (1) , 47-51
- https://doi.org/10.1080/00087114.1968.10796281
Abstract
A unique karyotype 10II+X+y1+y2+y3+y4+y5+y6 is described in the Alticide beetle, Asphaera daniela Bechyné. Despite lack of pairing between the sex chromosomes, their orientation in M I is always , and segregation X—(y1+y2+y3+y4+y5+y6). Clumping-together of all y's in PM I appears to facilitate their orientation as a unit. The number of y chromosomes seems to have risen by accumulation, coupled with a reduction in size.Keywords
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