Related Experiment Video
Updated: Jul 30, 2025

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration
Published on: February 28, 2013
Inherited Hairlessness: A Case Study of Familial Congenital Atrichia
Mounika Nagarani Tunuguntla1, Bejoi Mathew2, Afreen Quadri3
1Internal Medicine, Guntur Medical College, Guntur, IND.
Abstract:
An uncommon disorder known as atrichia congenita with ectodermal defects (isolated type) can present with the complete absence of hair at birth or can cause the scalp hair to fall out between the ages of one to six months, after that no new hair growth occurs. Patients don't develop pubic and axillary hairs in addition to lacking or having scant brow, eyelash, and body hair. It could develop independently or in tandem with other problems. Isolated congenital alopecia has been reported to occur in both sporadic and familial forms. Although dominant or unevenly dominant inheritance has been found in rare families, the isolated family form often inherits in an autosomal recessive manner. In this case report, we present a rare case of familial congenital atrichia in a 16-year-old girl. There can be a genetic component to her illness because both her mother and father also show some of the clinical features.
More Related Videos
Related Concept Videos
X-linked Traits
Pedigree Analysis
Pleiotropy
Epistasis
Lethal Alleles
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Accessory Structures of the Skin: Hair Growth and Types

