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Related Concept Videos

Human Genetics01:28

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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.
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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.
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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
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[HOW SIMPLE IS "SIMPLE" GENETIC COUNSELING?]

Moran Echar1, Amir Peleg1, Amalia Harari-Shacham1

  • 1The Human Genetics institute, Carmel Medical Center, Haifa, Israel.

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|July 2, 2023
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Summary

Over 60% of prenatal genetic counseling sessions before amniocentesis require extended explanations beyond basic information. This highlights the necessity of thorough genetic counseling, even for seemingly simple cases, to ensure comprehensive patient understanding.

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Area of Science:

  • Medical Genetics
  • Genetic Counseling

Context:

  • Prenatal genetic counseling before amniocentesis is often considered a
  • simple
  • consultation, potentially limiting time for detailed patient history.
  • Some centers limit duration or group patients for basic explanations.

Purpose:

  • To assess the necessity of extended genetic counseling during prenatal consultations for amniocentesis, even when indications appear straightforward.

Summary:

  • A study of 1085 genetic counseling appointments before amniocentesis found that 60.5% required additional explanation beyond the basic consultation.
  • Reasons for extended counseling included personal/family medical history, carrier status, and previous pregnancy conditions.
  • Additional explanations varied in length, with most being 5-15 minutes, and 31% of patients received recommended carrier screening tests.

Impact:

  • Demonstrates that over 60% of
  • simple
  • prenatal genetic counseling cases necessitate more in-depth discussion.
  • Emphasizes the importance of comprehensive genetic counseling, including detailed history taking and sufficient time, even for routine indications.
  • Suggests caution with abbreviated consultations, recommending detailed questionnaires and acknowledgment of limitations.