Related Experiment Video
Updated: May 6, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
Published on: February 3, 2023
An algorithm to approximate the likelihood for pedigree data with loops by cutting
C Stricker1, R L Fernando, R C Elston
1Department of Biometry and Genetics and the Center for Molecular and Human Genetics, Louisiana State University, Medical Center, 1901 Perdido Street, 70112-1393, New Orleans, USA.
Abstract:
This paper presents a recursive algorithm to approximate the likelihood in arbitrary pedigrees with loops. The algorithm handles any number and nesting levels of loops in pedigrees. The loops are cut as described in a previous publication and the approximate likelihood is simultaneously computed using the cut pedigree. No identification of a loop in the pedigree is necessary before the algorithm is applied.
Related Concept Videos
Pedigree Analysis
Pedigree Analysis
Probability Laws
Punnett Squares
Punnett Squares
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...

