RNA synthesis and heterochromatization in early development of a mealybug.

The relationship between DNA methylation and chromosome imprinting in the coccid Planococcus citri.

The phenomenon of chromosome, or genomic, imprinting indicates the relevance of parental origin in determining functional differences between alleles, homologous chromosomes, or haploid sets. In mealybug males (Homoptera, Coccoidea), the haploid set of paternal origin undergoes heterochromatization at midcleavage and remains so in most of the tissues. This different behavior of the two haploid ...

Chromosomal inactivation and reactivation in mealy bugs.

UNDERSTANDING genetic inactivation and reactivation in a developing organism is the key to understanding cytodifferentiation. One phenomenon which may help us formulate the proper questions about differentiation is the inactivation and reactivation of whole chromosomes or large segments of chromosomes during development. In this paper I am going to describe one such system of chromosomal modifi...

Heterochromatization and euchromatization of whole genomes in scale insects (Coccoidea: Homoptera).

In several families of scale insects (coccids), the sex of an embryo is determined by the number of genetically active genomes present (one = males, two = females). In mealybugs (Pseudococcidae), both males and females develop from fertilized eggs but, in the embryos that develop into males, the set of chromosomes (genome) of paternal origin (PG) becomes heterochromatic (H) and genetically inac...

I-13: Transcriptome Dynamics of Human and Mouse Preimplantation Embryos Revealed by Single Cell RNA-Sequencing

Background: Mammalian preimplantation development is a complex process involving dramatic changes in the transcriptional architecture. However, it is still unclear about the crucial transcriptional network and key hub genes that regulate the proceeding of preimplantation embryos. Materials and Methods: Through single-cell RNAsequencing (RNA-seq) of both human and mouse preimplantation embryos, ...

Natural enemies of cypress tree mealybug planococcus vovae (nasonov)and their parasitoids in shiraz iran