Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Trihybrid Crosses02:27

Trihybrid Crosses

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 chance to...
Dihybrid Crosses01:18

Dihybrid Crosses

Overview
Punnett Squares01:00

Punnett Squares

Overview
Epistasis01:39

Epistasis

In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
Law of Segregation01:49

Law of Segregation

When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.
Polygenic Traits01:18

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

In ovo sexing and genotyping using PCR techniques: a contribution to the 3R principles in chicken breeding.

Scientific reports·2026
Same author

Genomic prediction of bone strength in laying hens using different sources of information.

Animal : an international journal of animal bioscience·2025
Same author

Is oviposition time and oviposition interval associated with the deposition of cuticle on the hen's egg?

British poultry science·2024
Same author

Association of keel bone morphometry with keel bone damage and skeletal quality in the laying hen.

British poultry science·2024
Same author

Corrigendum to "An analysis of the maxillary beak shape variation between 2 pure layer lines and its relationship to the underlying premaxillary bone, feather cover, and mortality" [Poult. Sci. 102 (8) (2023) 102854].

Poultry science·2023
Same author

An analysis of the maxillary beak shape variation between 2 pure layer lines and its relationship to the underlying premaxillary bone, feather cover, and mortality.

Poultry science·2023

Related Experiment Video

Updated: Jun 7, 2026

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
07:34

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

Published on: August 22, 2018

Quantitative trait loci affecting eggshell traits in an F(2) population.

M Tuiskula-Haavisto1, M Honkatukia, R Preisinger

  • 1MTT Agrifood Research Finland, Biotechnology and Food Research, 31600 Jokioinen, Finland. maria.tuiskula-haavisto@mtt.fi

Animal Genetics
|November 9, 2010
PubMed
Summary

Researchers identified quantitative trait loci (QTL) for eggshell quality in chickens. These findings support marker-assisted selection for improving eggshell strength and reproductive performance in poultry breeding programs.

More Related Videos

Gamete Collection and In Vitro Fertilization of Astyanax mexicanus
10:52

Gamete Collection and In Vitro Fertilization of Astyanax mexicanus

Published on: May 25, 2019

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
13:55

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization

Published on: February 3, 2013

Related Experiment Videos

Last Updated: Jun 7, 2026

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
07:34

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

Published on: August 22, 2018

Gamete Collection and In Vitro Fertilization of Astyanax mexicanus
10:52

Gamete Collection and In Vitro Fertilization of Astyanax mexicanus

Published on: May 25, 2019

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
13:55

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization

Published on: February 3, 2013

Area of Science:

  • Animal Genetics
  • Poultry Science
  • Quantitative Genetics

Background:

  • Eggshell quality is crucial for table eggs and chicken reproduction, with weak shells causing economic losses and increasing Salmonella risk.
  • Improving eggshell quality through traditional breeding is challenging due to measurement difficulties and costs.
  • Marker-assisted selection (MAS) offers a potential solution for enhancing eggshell quality traits.

Purpose of the Study:

  • To identify quantitative trait loci (QTL) associated with eggshell quality traits in chickens.
  • To find genetic markers linked to eggshell deformation, breaking force, and weight for marker-assisted selection.
  • To assess the additive and epistatic effects of QTL on eggshell quality.

Main Methods:

  • Utilized an F2 population of 668 female chickens for quantitative trait loci (QTL) mapping.
  • Employed 160 microsatellite markers across 27 chromosomes to analyze genetic variation.
  • Measured eggshell traits including deformation, breaking force, and weight at various production stages.

Main Results:

  • Identified 11 genome-wide and 15 suggestive QTL for eggshell traits.
  • Located specific QTL for deformation on chromosomes 1, 2, 6, 10, 14, and Z.
  • Detected QTL for breaking force on chromosomes 2, 3, 10, 12, and Z, and for shell weight on chromosomes 6, 12, 24, and Z.
  • QTL collectively explained 10-15% of the phenotypic variance for the traits, with individual QTL contributing 1.5-4.6%.

Conclusions:

  • The identified QTL provide a genetic basis for improving eggshell quality in chickens.
  • Additive effects of the detected QTL suggest suitability for marker-assisted selection.
  • Further characterization of these loci can lead to the development of closely linked markers for efficient breeding programs.