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Related Concept Videos

Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
Nondisjunction01:21

Nondisjunction

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers.  Nondisjunction is common during anaphase I or anaphase II of meiosis.  Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
Crossing Over01:30

Crossing Over

Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I, duplicated...
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...

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Related Experiment Video

Updated: May 23, 2026

Multiplexed Fluorescent Immunohistochemical Staining of Four Endometrial Immune Cell Types in Recurrent Miscarriage
05:16

Multiplexed Fluorescent Immunohistochemical Staining of Four Endometrial Immune Cell Types in Recurrent Miscarriage

Published on: August 4, 2021

Genetics of recurrent miscarriage: challenges, current knowledge, future directions.

Kristiina Rull1, Liina Nagirnaja, Maris Laan

  • 1Human Molecular Genetics Research Group, Institute of Molecular and Cell Biology, University of Tartu Tartu, Estonia.

Frontiers in Genetics
|March 30, 2012
PubMed
Summary

Recurrent miscarriage (RM) research faces challenges in subject selection and genetic analysis. Future studies should integrate diverse omics approaches and foster collaboration for better understanding of RM causes.

Keywords:
association studiesepigeneticsgeneticsomic’s studiesplacentarecurrent miscarriageresearch and clinical collaborationstudy design

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Last Updated: May 23, 2026

Multiplexed Fluorescent Immunohistochemical Staining of Four Endometrial Immune Cell Types in Recurrent Miscarriage
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Published on: August 4, 2021

Using Mouse Oocytes to Assess Human Gene Function During Meiosis I
11:13

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Published on: April 10, 2018

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09:03

Semiconductor Sequencing for Preimplantation Genetic Testing for Aneuploidy

Published on: August 25, 2019

Area of Science:

  • Reproductive Medicine
  • Genetics
  • Genomics

Background:

  • Recurrent miscarriage (RM) affects 1-3% of couples trying to conceive, with multifactorial causes complicating diagnosis.
  • Current genetic studies for RM pathogenesis face challenges in defining study subjects (patient, couple, fetus/placenta) and controls.
  • Investigating RM requires robust study designs, ideally trio-based, encompassing both partners and pregnancies.

Purpose of the Study:

  • To highlight challenges in designing genetic and "omics" studies for recurrent miscarriage (RM).
  • To discuss limitations of current candidate gene association studies in RM.
  • To propose future directions for identifying biomolecular risk factors in RM.

Main Methods:

  • Review of genetic association studies investigating candidate genes in RM.
  • Analysis of challenges in subject and control selection for RM "omics" studies.
  • Discussion of limitations in current prognostic molecular diagnostic tests for RM.

Main Results:

  • Candidate gene association studies in RM have yielded inconclusive or negative results for polymorphisms in approximately 100 genes.
  • Clinical application of prognostic molecular diagnostic tests for RM remains uncertain.
  • Existing genetic association studies for RM show limitations in identifying causative factors.

Conclusions:

  • Future RM research requires integrated "omics" approaches, including SNPs, copy number variations, gene/protein expression, and epigenetic regulation.
  • Whole-genome analysis and studies of single genes are crucial for advancing RM research.
  • Enhanced collaboration between research centers and RM clinics is essential for progress.