نتایج جستجو برای: paternal restorer line
تعداد نتایج: 420993 فیلتر نتایج به سال:
The mouse germ line originates at 6.5 days post coitum (dpc) in the proximal epiblast, apparently in response to signals from the primitive endoderm or the extraembryonic mesoderm [1,2]. Some studies have implied a significant role for imprinted genes in germ-line development [3,4]. These genes, whose expression is determined by their parental origin [5], serve complementary functions during ma...
The lifelong spermatogonial stem cell divisions unique to male germ cell production are thought to contribute to a higher mutation frequency in males. The fact that certain de novo human genetic conditions (e.g., achondroplasia) increase in incidence with the age of the father is consistent with this idea. Although it is assumed that the paternal age effect is the result of an increasing freque...
Background Recurrent spontaneous abortion (RSA) is a complication in pregnancy that results into fetus rejection by mother and several factors such as anatomical, genetic and immunological problems can be its etiologic causes. Paternal lymphocyte therapy as an immunotherapy for these patients has been more evaluated. The purpose of lymphocyte therapy is stimulation of the mother immune system t...
BACKGROUND Miscarriages occur to excess in sibships with neural tube defects (NTDs) and among maternal versus paternal relatives in NTD families. Folic acid prevents most NTDs. Its potential to prevent miscarriages has been controversial. AIM We evaluated the relationship of maternal line and periconceptional folic acid with miscarriage. METHODS First cousins in Irish families with NTDs wer...
The localization of sperm DNA strands was examined in preimplantation mouse embryos. Male mice were treated with bromodeoxyuridine (BrdU) to label germ-cell-line DNA and were then mated with unlabeled females. Sperm DNA strands in early embryos derived from these matings could be detected by means of a fluorescent antibody specific to BrdU. The position and number of fluorescent spots detected ...
Background: Selection of genotypically superior parents is most challenging task for the development potential hybrids. In conventional plant breeding, magnitude heterosis and inbreeding depression has been proved very effective in identifying vigorous parental combinations. Methods: The present investigation was carried out to study heterosis, residual forty sorghum crosses (F1s F2s) obtained ...
This study investigated the association between Iranian university students' perception of their fathers and their object-relation and defense mechanism. Participants were 438 students between 18-22 years from Allameh Tabatabae University, who agreed to fill the Fatherhood Scale out (Dick, 2004), Bell object relation inventory and defense mechanism style, and defense style questionnaire (DSQ-40...
The aim of this study was to examine the feasibility of using an economic and practical method in order to perform non-invasive prenatal testing of thalassemia as a sing gene disorder.Sixteen (16) pregnant mothers in the 11th week of pregnancy who were referred for prenatal diagnosis of thalassemia were selected. The parents had one of IVSII-1, IVSI-5 or FR codon 8/9 mutations. Enrichment of cf...
Previous Y-chromosome studies have demonstrated that Ashkenazi Levites, members of a paternally inherited Jewish priestly caste, display a distinctive founder event within R1a, the most prevalent Y-chromosome haplogroup in Eastern Europe. Here we report the analysis of 16 whole R1 sequences and show that a set of 19 unique nucleotide substitutions defines the Ashkenazi R1a lineage. While our su...
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