Related Experiment Video
Updated: Jul 14, 2026

07:54
Manipulation of Ploidy in Caenorhabditis elegans
Published on: March 15, 2018
True hermaphrodite: very unusual type
Yifru Berhan1, Be-ede Lemma, Wondwossen Ergete
1Department of Obstetrics and Gynaecology, Tikur Anbessa Hospital, P.O. Box 23558, Addis Ababa, Ethiopia.
Ethiopian Medical Journal
|August 10, 2006
Summary
This case report details an unusual true hermaphrodite diagnosed late in life. The individual presented with infertility and lack of ejaculation, despite having both ovarian and testicular tissue without ambiguous genitalia.
Area of Science:
- Reproductive Medicine
- Endocrinology
- Genetics
Background:
- True hermaphroditism is a rare disorder of sexual differentiation.
- It involves the presence of both ovarian and testicular tissue within the same individual.
- This condition often presents with ambiguous genitalia, though variations exist.
Purpose of the Study:
- To report an atypical case of true hermaphroditism.
- To highlight the diagnosis in an adult presenting with infertility and ejaculatory dysfunction.
- To emphasize the occurrence of true hermaphroditism without ambiguous external genitalia.
Main Methods:
- Case study analysis.
- Surgical exploration for undescended testis.
- Gross and histological examination of gonadal and reproductive tissues.
Main Results:
- A 25-year-old patient was diagnosed with true hermaphroditism.
- The patient possessed a left ovary, fallopian tube, uterus, and a descended left testis.
- There was a complete absence of right-sided adnexa or testis, and external genitalia were unambiguous.
Conclusions:
- True hermaphroditism can occur without ambiguous external genitalia.
- Late diagnosis is possible in cases presenting with infertility and ejaculatory issues.
- This case expands the understanding of the phenotypic variability in disorders of sexual differentiation.
Related Concept Videos
Mate Choice
Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
Understanding Species and Reproductive Barriers
A species is a group of organisms that interbreed and produce fertile offspring. Typically, individuals of the same species appear similar and share common characteristics due to their highly similar genomes. However, not all organisms that look alike are members of the same species. Various mechanisms keep most species discrete. While some mechanisms prevent reproductive behavior and fertilization (pre-zygotic isolation), others prevent the production of fertile offspring after mating has...
Lampbrush Chromosomes
In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...
The Ratio of X Chromosome to Autosomes
In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
External Female Genitals
The vulva encompasses the external structures of the female reproductive system. At the forefront is the monpubis, a cushion of fatty tissue atop the pubic bone. Once puberty sets in, this area typically grows hair. Extending from just behind the mons pubis are the labia majora (labia = 'lips'; majora = 'larger'), which are larger skin fs olds coated with hair. Nestled within are the labia minora (labia = 'lips'; minora = 'smaller'), which are thinner, more pigmented, and hairless. While the...
Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...

