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Dizygotic (DZ)

Synonyms

Monochorionic dizygotic twins; Twins

Definition

In the course of fertilization, when two sperms fertilize two mature ova due to multiple ovulation under the control of hypothalamo-pituitary-ovarian axis promoted by different physiological, genetic, and other environmental factors, including the use of advanced reproductive technologies to maximize reproductive success.

Introduction

The word “twins” originates from old English: “twi” means two or “twin” means double. Twin babies are although less frequent but not rare in parallel with the single child. Dizygotic (DZ) or fraternal twins are produced from two different ova fertilized by two different sperms whereas monozygotic (MZ) or identical twins derive from a single ova dividing into two separate embryos. Conjoint twins are also identical but not separated. Compare to the prevalence of monozygotic twins which is almost constant, the prevalence of dizygotic twins varies over time across the different places in the world. In...

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Author information

Authors and Affiliations

  1. National Institute of Mental Health and Neurosciences, Bangalore, India

    Sanjay Das

  2. Centre for Neural and Cognitive Sciences, School of Medical Science, University of Hyderabad, Hyderabad, India

    Akash Gautam

Authors
  1. Sanjay Das
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  2. Akash Gautam
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Corresponding author

Correspondence to Sanjay Das .

Editor information

Editors and Affiliations

  1. Oakland University , Rochester, MI, USA

    Jennifer Vonk

  2. Department of Psychology, Oakland University Department of Psychology, Rochester, MI, USA

    Ph.D. Todd Shackelford

Section Editor information

  1. Oakland University, Rochester, MI, USA

    Jennifer Vonk

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Das, S., Gautam, A. (2019). Dizygotic (DZ). In: Vonk, J., Shackelford, T. (eds) Encyclopedia of Animal Cognition and Behavior. Springer, Cham. https://doi.org/10.1007/978-3-319-47829-6_24-1

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  • DOI: https://doi.org/10.1007/978-3-319-47829-6_24-1

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  • Print ISBN: 978-3-319-47829-6

  • Online ISBN: 978-3-319-47829-6

  • eBook Packages: Springer Reference Behavioral Science and PsychologyReference Module Humanities and Social Sciences

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