monozygotic

(adjective)

Developed from a single fertilized ovum.

Related Terms

Examples of monozygotic in the following topics:

  • Nature vs. Nurture

    • Each of these traits is measured and compared between monozygotic (identical) twins, biological siblings who are not twins, and adopted siblings who are not genetically related.
    • Typically, monozygotic twins will have a high correlation of sibling traits, while biological siblings will have less in common, and adoptive siblings will have less than that.

  • Genetic Basis of Intelligence and Learning

    • Conventional twin studies reinforce this pattern: monozygotic (identical) twins raised separately are more similar in IQ than dizygotic (fraternal) twins raised together, and much more than adoptive siblings.

  • The Biopsychosocial Model of Health and Illness

    • The greatest single risk factor for developing schizophrenia, for example is having a first-degree relative with the disease (risk is 6.5%); more than 40% of monozygotic twins of those with schizophrenia are also affected.

  • Autism Spectrum Disorder

    • In addition, research suggests that there is a much higher concordance rate among monozygotic (identical) twins compared to dizygotic (fraternal) twins.

  • Genetic and Environmental Impacts on Intelligence

    • Conventional twin studies reinforce this pattern: monozygotic (identical) twins raised separately are more similar in IQ than dizygotic (fraternal) twins raised together, and much more than adoptive siblings.