Heteropagus Twins: A Tale of Two
Akash B Pati1, Santosh K Mahalik1, Suprava Naik2
1Department of Pediatric Surgery, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India.
Abstract:
Parasitic twin is a rare occurrence, with rachispagus being the rarest. The surgical approach and timing are not standardized. We describe the management of two cases of rachispagus and review the sparse literature on this entity. Both cases were operated early because of the social burden on the family as well as difficulty in nursing care. The first patient had associated major systemic malformations in the autosite (cerebral, spinal and cardiac), and succumbed in the postoperative period. The entity was isolated in the second who is doing well.
More Related Videos
Related Concept Videos
Epistasis
Nondisjunction
Nondisjunction
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Genetic Lingo
Multiple Allele Traits


