Related Experiment Video
Updated: Oct 1, 2026

Use of Bisection to Reduce Mitochondrial DNA in the Bovine Oocyte
Published on: July 6, 2022
Mitochondrial DNA polymorphisms and fertility in beef cattle
Sutarno1, J M Cummins, J Greeff
1Division of Veterinary and Biomedical Sciences, Murdoch University, Perth, WA, Australia.
Abstract:
Four hundred and twenty-two beef cattle of two different breeds (purebred Hereford and composite multibreed) were characterized by polymerase chain reaction-restriction fragment length polymorphism, using the restriction enzymes ApaI, AvaII, HindIII, PstI, SpeI, SspI and TaqI in two regions (the D-loop and the ND-5 gene) of mitochondrial DNA. The association between molecular haplotypes and records on calving rate, defined as the mean number of live calves born per year over 4 years, were examined by analysis of variance. A significant association was found between calving rate and mitochondrial polymorphisms in both breeds. This may have implications for genetically improving cow fertility.
Related Concept Videos
Animal Mitochondrial Genetics
Non-nuclear Inheritance
Incomplete Dominance
Export of Mitochondrial and Chloroplast Genes
Genetic Variation
Genes exist in different versions called alleles, which...
Meiosis I
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
