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Article

Different patterns of X inactivation in MZ twins discordant for red-green color-vision deficiency.

American journal of human genetics - 1 Aug 1992

Jørgensen A L, Philip J, Raskind W H, Matsushita M, Christensen B, Dreyer V, Motulsky A G

Abstract excerpt

Two female identical twins who were clinically normal were obligatory heterozygotes for X-linked deuteranomaly associated with a green-red fusion gene derived from their deuteranomalous father. On anomaloscopy, one of the twins was phenotypically deuteranomalous while the other had normal color vision. The color vision-defective twin had two sons with normal color vision and one deuteranomalous son....

Topics

Chromosome Mapping
Color Vision Defects
DNA
Diseases in Twins
Dosage Compensation, Genetic
Female
Genotype
Humans
Lymphocytes
Male
Methylation

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Pedigree

Twins, Monozygotic

Source

Open in PubMed Open full text

Identifiers

PMID: 1642230
PMCID: PMC1682669

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-1642230-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

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