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Related Concept Videos

Epistasis01:39

Epistasis

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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...
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Pedigree Analysis01:35

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Incomplete Dominance01:43

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Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Trihybrid Crosses02:27

Trihybrid Crosses

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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...
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Monohybrid Crosses01:20

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Dihybrid Crosses01:18

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Updated: Jun 11, 2025

Minimally Invasive Embryo Transfer and Embryo Vitrification at the Optimal Embryo Stage in Rabbit Model
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Pedigree-Based Description of Danubia Alba Rabbit Breed Lines.

János Posta1, Csongor Demeter2, Zoltán Német3,4,5

  • 1Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary.

Animals : an Open Access Journal From MDPI
|September 28, 2024
PubMed
Summary

Maintaining the Danubia Alba rabbit lines appears feasible, as genetic diversity is sufficient. Analysis of pedigree quality, inbreeding, and population size indicates no immediate threats to these valuable livestock breeds.

Keywords:
Oryctolagus cuniculus var. domesticagene origingenetic diversityhomozygositypedigree quality

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Area of Science:

  • Animal Genetics
  • Conservation Biology
  • Livestock Management

Background:

  • Livestock breed diversity is crucial for global biodiversity and requires effective management.
  • Avoiding inbreeding is essential for sustainable breeding programs.

Purpose of the Study:

  • To assess the genetic health of Danubia Alba rabbit lines.
  • To evaluate pedigree quality, generation interval, gene origin, inbreeding, and effective population size.

Main Methods:

  • Pedigree analysis traced back to founder animals.
  • Calculation of complete generation equivalent (GenCom) and maximum generations (GenMax).
  • Assessment of Wright inbreeding coefficient (F_Wright) and Kalinowski's decomposition of inbreeding.

Main Results:

  • Generation equivalents ranged from 17.49 to 18.32, with over 30 maximum generations.
  • Bottleneck effects were attributed to selection, not genetic loss.
  • Inbreeding coefficients varied, with line 'D' showing the lowest and line 'X' the highest.

Conclusions:

  • Danubia Alba rabbit lines exhibit no significant issues in maintaining their populations.
  • Effective population sizes suggest long-term viability.
  • Genetic diversity management is key for conserving livestock breeds.