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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...
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Genetic Screens02:46

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Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
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The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
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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...
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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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Related Experiment Video

Updated: Apr 27, 2026

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
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Genetic testing: medico-legal issues.

Sara Bird1

  • 1MBBS, MFM(clin), FRACGP, is Manager, Medico-Legal and Advisory Services, MDA National.

Australian Family Physician
|July 10, 2014
PubMed
Summary

Genetic testing presents unique medico-legal challenges for general practitioners (GPs). GPs must navigate ethical and legal issues arising from genetic variants, patient care, and family implications.

Area of Science:

  • Medical Law
  • Genetics
  • Bioethics

Background:

  • Increasing availability and frequency of genetic testing.
  • Genetic testing reveals variants with future disease risk implications for patients and relatives.
  • Evolving regulatory framework for genetic testing in Australia.

Observation:

  • General practitioners (GPs) face unique medico-legal issues with genetic testing.
  • Potential for identifying genetic variants necessitates careful consideration of future disease risks.
  • The regulatory landscape for genetic testing in Australia is undergoing changes.

Findings:

  • GPs are inevitably involved in long-term patient and family care post-genetic testing.
  • Medico-legal issues arise from direct-to-consumer genetic testing.

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  • Disclosure of genetic information to relatives and parentage testing requests pose challenges.

    • Implications:

    • GPs require awareness of medico-legal responsibilities in genetic testing.
    • Clear guidelines are needed for managing genetic information and related testing.
    • Ethical and legal frameworks must adapt to advancements in genetic technologies.