Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Relationship with Other Adult Family Members and Siblings01:29

Relationship with Other Adult Family Members and Siblings

284
Other adult family members and siblings play a crucial role in shaping children’s social and emotional development. While parents or primary caregivers are often the central figures in early attachment and socialization, other adults in a child’s life, such as grandparents, aunts, and uncles, can significantly influence developmental outcomes. These influences depend on each adult’s personality and may help compensate when a primary caregiver is emotionally distant or...
284
Sex Linked Disorders01:43

Sex Linked Disorders

28.9K
28.9K
Sex-linked Disorders01:43

Sex-linked Disorders

95.5K
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
95.5K
Equivalent Couples01:28

Equivalent Couples

900
In mechanical engineering, the concept of equivalent couples plays a crucial role in understanding and analyzing various mechanical systems.
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
900
The Y Chromosome Determines Maleness02:19

The Y Chromosome Determines Maleness

7.0K
The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
7.0K
Nondisjunction01:21

Nondisjunction

4.6K
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers.  Nondisjunction is common during anaphase I or anaphase II of meiosis.  Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold...
4.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Coming out in the gay world.

Psychiatry·1971
See all related articles

Related Experiment Video

Updated: May 6, 2026

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing
08:39

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Published on: September 1, 2017

7.4K

Six homosexual siblings.

B M Dank1

  • 1California State College, Long Beach, USA.

Archives of Sexual Behavior
|November 2, 2013
PubMed
Summary

This study reports on a family with multiple homosexual siblings, suggesting early family dynamics, particularly parental behavior, may influence homosexual development. Further research into such families can test theories on homosexuality

Area of Science:

  • Psychology
  • Genetics
  • Family Studies

Background:

  • Multiple homosexual siblings in a single family are rare, with only one other documented case.
  • This study examines a family with ten siblings, all experiencing some degree of homosexual behavior.

Purpose of the Study:

  • To report on a family with multiple homosexual siblings and analyze potential etiological factors.
  • To explore the role of early family dynamics in the development of homosexual adaptation.

Main Methods:

  • Case study of a family with ten siblings exhibiting homosexual experiences.
  • Analysis of family dynamics, including parental behavior and sibling relationships.

Main Results:

  • Six of ten siblings were homosexual or predominantly homosexual; five had a homosexual identity.

More Related Videos

Chromosomics: Detection of Numerical and Structural Alterations in All 24 Human Chromosomes Simultaneously Using a Novel OctoChrome FISH Assay
06:25

Chromosomics: Detection of Numerical and Structural Alterations in All 24 Human Chromosomes Simultaneously Using a Novel OctoChrome FISH Assay

Published on: February 6, 2012

18.4K
Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

703

Related Experiment Videos

Last Updated: May 6, 2026

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing
08:39

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Published on: September 1, 2017

7.4K
Chromosomics: Detection of Numerical and Structural Alterations in All 24 Human Chromosomes Simultaneously Using a Novel OctoChrome FISH Assay
06:25

Chromosomics: Detection of Numerical and Structural Alterations in All 24 Human Chromosomes Simultaneously Using a Novel OctoChrome FISH Assay

Published on: February 6, 2012

18.4K
Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

703
  • A hostile, violent, and alcoholic father contrasted with an affectionate, loving mother.
  • One interviewed homosexual male sibling showed strong maternal identification and adopted a passive role in his homosexual marriage.

    • Conclusions:

    • The findings support theories linking early family relationships to homosexual adaptation.
    • Multiple homosexual sibling families offer valuable data for testing etiological theories of homosexuality.