CHROMATIN DIMINUTION AND ORGANIZATION OF CHROMOSOMES OF CYCLOPS STRENUUS-STRENUUS (CRUSTACEA, COPEPODA)

Authors
GRISHANIN AK AKIFYEV AP
Citation
Ak. Grishanin et Ap. Akifyev, CHROMATIN DIMINUTION AND ORGANIZATION OF CHROMOSOMES OF CYCLOPS STRENUUS-STRENUUS (CRUSTACEA, COPEPODA), Genetika, 29(7), 1993, pp. 1099-1107
Citations number
17
Categorie Soggetti
Genetics & Heredity
Journal title
Genetika → ACNP
ISSN journal
00166758
Volume
29
Issue
7
Year of publication
1993
Pages
1099 - 1107
Database
ISI
SICI code
0016-6758(1993)29:7<1099:CDAOOC>2.0.ZU;2-7
Abstract
The process of the chromosome diminution in the somatic cells during e arly embryogenesis in Cyclops strenuus strenuus (Crustacea, Copepoda) was studied. It was found that the amount of the cellular granules of eliminating chromatine decreased during the prophase-metaphase stages from 600 to 150. Also, the metaphase chromosomes aberrations in the co urse of the 3rd cleavage stage were observed. The chromosomes had defi nite G-banding during the metaphase. Electron microscopic study reveal ed the presence in the granulas of a dense membrane. The data obtained are discussed from the standpoint of the modern knowledge of the geno me structure.