Can Two People Be Genetically Identical? Understanding Genetic Similarity

Explore if two people can be genetically identical and the role of monozygotic twins in genetics.

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Two people cannot be genetically identical unless they are monozygotic twins (identical twins). Identical twins arise from a single fertilized egg that splits and develops into two embryos, sharing the exact same genetic information. For everyone else, genetic variation is the norm due to the combination of DNA from both parents creating unique genetic profiles for each individual.

FAQs & Answers

  1. What are monozygotic twins? Monozygotic twins, or identical twins, come from a single fertilized egg that splits into two embryos, sharing identical genetic material.
  2. How does genetic variation occur? Genetic variation occurs due to the combination of DNA inherited from both parents, creating unique genetic profiles for each individual.
  3. Can identical twins have different fingerprints? Yes, identical twins can have different fingerprints due to environmental factors affecting their development.
  4. Why are most people genetically different? Most people are genetically different because each individual inherits a unique combination of genes from their parents, leading to high genetic diversity.

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