About Us

With years of experience in the field, our team of skilled professionals utilizes state-of-the-art technology and cutting-edge techniques to analyze and interpret genetic information. Under the direction of Dr. Allan King, Karyotekk Inc. and its partners offer over 40 years of experience in conventional and molecular cytogenetics, cellular and genome research, training, and project management in both the public and private domains. We pride ourselves on our commitment to excellence and our ability to provide customized solutions to meet the unique needs of our clients. At Karyotekk Inc., we understand the importance of your work and the impact it has on scientific advancements and animal health, which is why we strive to deliver fast, accurate, and comprehensive results.

Allan King, BSc, MSc Guelph, PhD Uppsala

President and Scientific Director, Karyotekk Inc. 
Professor and Canada Research Chair 
Department of Biomedical Sciences, University of Guelph 

Dr. King’s areas of expertise include the cytogenetic and morphological aspects of fertilization and early embryonic development. He specializes in in vitro fertilization, embryo culture, and cloning, providing critical insights into reproductive biology. In addition, he has worked on projects which investigates embryonic gene expression, with a focus on sex chromosome-linked gene expression.

Scientific Publications

  • Villagomez DAF, Welsford EG, King WA, Revay T. (2020) Androgen Receptor Gene Variants in New Cases of Equine Androgen Insensitivity Syndrome. Genes (Basel). Jan

    10;11(1):78

  • Rezaei S, Donaldson B, Villagomez DAF, Revay T, Mary N, Grossi DA, King WA. (2020) Routine Karyotyping Reveals Frequent Mosaic Reciprocal Chromosome Translocations in Swine: Prevalence, Pedigree, and Litter Size. Sci Rep. 2020 May 4;10(1):7471

  • King WA, Donaldson B, Rezaei S, Schmidt C, Revay T, Villagomez DAF, Kuschke K (2019) Chromosomal Abnormalities in Swine and Their Impact on Production and Profitability. In Comprehensive Biotechnology, Vol. 4, Moo-Young, M., Ed., Elsevier: Pergamon, pp 508–518

  • Donaldson B, Villagomez DAF, Revay T, Rezaei S, King WA. (2019) Non-Random Distribution of Reciprocal Translocation Breakpoints in the Pig Genome. Genes (Basel). Sep

    30;10(10): 3

  • Ferris J, Mahboubi K, King WA, Favetta LA,. (2016). BPA exposure during in vitro oocyte maturation results in dose-dependent alterations to embryo development rates, apoptosis rate, sex ratio and gene expression. Reproductive Toxicology 59:128-38

  • Quach AT, Oluwole O, King WA, Revay T. (2015.) The Porcine TSPY Gene Is Tricopy but Not a Copy Number Variant.PLoS One. 2015 Jul 2;10(7):e0131745

  • Ashkar FA, Revay T, Rho N, Madan P, Dufort I, Robert C, Favetta LA, Schmidt C, King WA. (2015). Thyroid hormones alter the transcriptome of in vitro-produced bovine blastocysts. Zygote Jun 23:1-11. [Epub ahead of print]

  • Revay T, Quach AT, Maignel L, Sullivan B, King WA. (2015)  Copy number variations in high and low fertility breeding boars. BMC Genomics. Apr 10;16(1):280. [Epub ahead of print]

  • Ferris J, Favetta LA, King WA. (2015). Bisphenol A Exposure during Oocyte Maturation in vitro Results in Spindle Abnormalities and Chromosome Misalignment in Bos taurus. Cytogenet Genome Res. Apr 11. [Epub ahead of print]

  • González-Grajales LA, Favetta LA, King WA, Mastromonaco GF.(2015). Developmental competence of 8 to 16-cell stage bison embryos produced by interspecies somatic cell nuclear transfer. Reprod Fertil Dev. 2 Mar 13. [Epub ahead of print]

  • Gilchrist GC, Kurjanowicz P, Mereilles FV. King WA, LaMarre J (2014) Telomere Length and Telomerase Activity in Bovine Pre-Implantation Embryos In Vitro. Reproduction in Domestic Animals 50:58-67.

  • Sangalli JR, Chiaratti MR, De Bem THC, de Araújo RR, Bressan FF, et al. (2014) Development to Term of Cloned Cattle Derived from Donor Cells Treated with Valproic Acid. Public Library of Science ONE 9(6): e101022.