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Updated: Jun 19, 2026

Quantification of Circulating Pig-Specific DNA in the Blood of a Xenotransplantation Model
07:34

Quantification of Circulating Pig-Specific DNA in the Blood of a Xenotransplantation Model

Published on: September 22, 2020

Sequence polymorphisms in porcine homologs of murine coat colour-related genes

N Okumura1, T Hayashi, H Uenishi

  • 1STAFF-Institute, Tsukuba, Ibaraki, Japan. okumura@staff.or.jp <okumura@staff.or.jp>

Animal Genetics
|October 2, 2009
PubMed

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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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Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
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Gene Duplication and Divergence

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Incomplete Dominance

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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