Non-directional pairing of the WZ chromosome bivalent in Bombyx mori

Toshiaki Fujimoto; Susumu Katsuma; Ken Sahara

doi:10.11416/jibs.94.2_019

Non-directional pairing of the WZ chromosome bivalent in Bombyx mori

Toshiaki Fujimoto
, Susumu Katsuma
, Ken Sahara

Systems Biology

Research output: Contribution to journal › Article › peer-review

Abstract

The silkworm Bombyx mori carries a holokinetic (holocentric) chromosome and has a female heterogametic sex determination system (WZ/ZZ chromosomes, female/male). Homologous chromosomes form directional synaptonemal complexes during primary meiosis. The WZ sex chromosomes have a bivalent form; however, the direction of their pairing has long been unknown. In this study, our fluorescence in situ hybridization-based analysis revealed that the W and Z chromosomes form a non-directional bivalent during primary meiosis.

Original language	English
Pages (from-to)	19-22
Number of pages	4
Journal	Journal of Insect Biotechnology and Sericology
Volume	94
Issue number	2
DOIs	https://doi.org/10.11416/jibs.94.2_019
Publication status	Published - 2025

All Science Journal Classification (ASJC) codes

Biotechnology
Applied Microbiology and Biotechnology
General Business,Management and Accounting
General Agricultural and Biological Sciences
Insect Science
Industrial and Manufacturing Engineering

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10.11416/jibs.94.2_019

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title = "Non-directional pairing of the WZ chromosome bivalent in Bombyx mori",

abstract = "The silkworm Bombyx mori carries a holokinetic (holocentric) chromosome and has a female heterogametic sex determination system (WZ/ZZ chromosomes, female/male). Homologous chromosomes form directional synaptonemal complexes during primary meiosis. The WZ sex chromosomes have a bivalent form; however, the direction of their pairing has long been unknown. In this study, our fluorescence in situ hybridization-based analysis revealed that the W and Z chromosomes form a non-directional bivalent during primary meiosis.",

keywords = "bacterial artificial chromosome, female heterogamety, insect, meiotic propahese, sex chromo-some, WZ synapsis",

author = "Toshiaki Fujimoto and Susumu Katsuma and Ken Sahara",

year = "2025",

doi = "10.11416/jibs.94.2\_019",

language = "English",

volume = "94",

pages = "19--22",

journal = "Journal of Insect Biotechnology and Sericology",

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AU - Fujimoto, Toshiaki

AU - Katsuma, Susumu

AU - Sahara, Ken

PY - 2025

Y1 - 2025

N2 - The silkworm Bombyx mori carries a holokinetic (holocentric) chromosome and has a female heterogametic sex determination system (WZ/ZZ chromosomes, female/male). Homologous chromosomes form directional synaptonemal complexes during primary meiosis. The WZ sex chromosomes have a bivalent form; however, the direction of their pairing has long been unknown. In this study, our fluorescence in situ hybridization-based analysis revealed that the W and Z chromosomes form a non-directional bivalent during primary meiosis.

AB - The silkworm Bombyx mori carries a holokinetic (holocentric) chromosome and has a female heterogametic sex determination system (WZ/ZZ chromosomes, female/male). Homologous chromosomes form directional synaptonemal complexes during primary meiosis. The WZ sex chromosomes have a bivalent form; however, the direction of their pairing has long been unknown. In this study, our fluorescence in situ hybridization-based analysis revealed that the W and Z chromosomes form a non-directional bivalent during primary meiosis.

KW - bacterial artificial chromosome

KW - female heterogamety

KW - insect

KW - meiotic propahese

KW - sex chromo-some

KW - WZ synapsis

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DO - 10.11416/jibs.94.2_019

M3 - Article

AN - SCOPUS:105008694884

SN - 1346-8073

VL - 94

SP - 19

EP - 22

JO - Journal of Insect Biotechnology and Sericology

JF - Journal of Insect Biotechnology and Sericology

IS - 2

ER -

Non-directional pairing of the WZ chromosome bivalent in Bombyx mori

Abstract

All Science Journal Classification (ASJC) codes

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