Chromatin diminution in Copepoda (Crustacea): pattern, biological role and evolutionary aspects
نویسندگان
چکیده
منابع مشابه
Chromatin diminution in Copepoda (Crustacea): pattern, biological role and evolutionary aspects
This article provides an overview of research on chromatin diminution (CD) in copepods. The phenomenology, mechanisms and biological role of CD are discussed. A model of CD as an alternative means of regulating cell differentiation is presented. While the vast majority of eukaryotes inactivate genes that are no longer needed in development by heterochromatinization, copepods probably use CD for...
متن کاملSome physical, mathematical and evolutionary aspects of biological pattern formation.
An important mechanism in the generation of biological structures is the production of defined spatial patterns within initially near-uniform cells and tissues. This process can be modelled on the basis of conventional molecular kinetics if there is a short-range activating effect in conjunction with depletion or inhibition extending over a wider range ('lateral inhibition'). Such pattern-gener...
متن کاملSome physical, mathematical and evolutionary aspects of biological pattern formation
An important mechanism in the generation of biological structures is the production of defined spatial patterns within initially near-uniform cells and tissues. This process can be modelled on the basis of conventional molecular kinetics if there is a shortrange activating effect in conjunction with depletion or inhibition extending over a wider range (‘lateral inhibition’). Such pattern-genera...
متن کاملDiversity of the Monstrilloida (Crustacea: Copepoda)
Monstrilloid copepods are protelean parasites of different groups of marine benthic invertebrates. Only their first naupliar, preadult, and adult phases are planktonic. Monstrilloids are currently represented by more than 115 nominal species contained in four genera. Its taxonomic knowledge has been hampered by nomenclatural and descriptive problems derived from their peculiar ontogeny and poor...
متن کاملSperm chromatin structure and male fertility: biological and clinical aspects.
Sperm chromatin/DNA integrity is essential for the accurate transmission of paternal genetic information, and normal sperm chromatin structure is important for sperm fertilizing ability. The routine examination of semen, which includes sperm concentration, motility and morphology, does not identify defects in sperm chromatin structure. The origin of sperm DNA damage and a variety of methods for...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Comparative Cytogenetics
سال: 2014
ISSN: 1993-078X,1993-0771
DOI: 10.3897/compcytogen.v8i1.5913