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      No evidence for extrapair fertilizations in the merlin revealed by DNA fingerprinting.

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          Abstract

          Broods of young merlins were compared with the adults in attendance at their nest by DNA fingerprinting. No offspring were found that mismatched genetically suggesting that intraspecific brood parasitism and extrapair fertilization are very rare in this population. The results are discussed in the light of the Paternity Assurance Hypothesis.

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          Hypervariable ‘minisatellite’ regions in human DNA

          Alec J. Jeffreys, Victoria Wilson, Swee Thein (1985)
          Article 0 comments Cited 268 times – based on 0 reviews     Review now
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            Demographic study of a wild house sparrow population by DNA fingerprinting.

            J Wetton, R E Carter, D Parkin … (2015)
            Over the past twenty years, several techniques from biochemical and molecular genetics, such as enzyme electrophoresis and isoelectric focusing, have been widely and successfully applied to the study of population differentiation and evolution. However, they have been less applicable to demographic problems such as assigning parentage to individuals within a population. This stems from a general weakness of data derived from enzyme loci: allele frequencies at polymorphic loci are sufficiently skewed that the majority of individuals are of one or two genotypes. Many enzyme systems can only be examined post mortem, so that the loci are of little use if the animals are to be studied in the wild. The search for new and more sensitive techniques for detecting genetic variation has continued, and recently a major discovery has come from molecular biology. Jeffreys et al. have reported the detection of a type of hypervariable 'minisatellite' DNA that is extraordinarily polymorphic in human populations. We have applied their technique to several bird species and particularly to a population of house sparrows (Passer domesticus) near Nottingham. We report here that one of the human minisatellite clones is a suitable probe for sparrow DNA and that it reveals variation as extensive as that found in man. These results suggest that analysis of minisatellite DNA will be a powerful tool in the study of demographic population genetics.
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              DNA fingerprinting in birds.

              T R Burke, M. W. Bruford (2015)
              Several regions of the human genome are highly variable in populations because the number of repeats in these regions of a short 'minisatellite' sequence varies at high frequency. Different minisatellites have a core sequence in common, however, and probes made up of tandem repeats of this core sequence detect many highly variable DNA fragments in several species including humans, cats, dogs and mice. The hypervariable sequences detected in this way are dispersed in the genome and their variability means that they can be used as a DNA 'fingerprint', providing a novel method for the identification of individuals, confirmation of biological relationships and human genetic analysis. We show here that human minisatellite-derived probes also detect highly variable regions in bird DNAs. Segregation analysis in a house sparrow family confirms that these regions comprise many mostly heterozygous dispersed loci and we conclude that house sparrow DNA fingerprints are analogous to those of humans. Fingerprint analysis identified one nestling, with fingerprint bands not present in the parent pair's fingerprints, which we conclude resulted from an extrapair copulation. Extrabond copulations have been described in many wild bird species, but their success and hence adaptive significance have rarely been quantifiable. DNA fingerprinting will be of great significance to studies of the sociobiology, demography and ecology of wild birds.
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                Author and article information

                Journal
                Journal ID (iso-abbrev): Mol. Ecol.
                Title: Molecular ecology
                Publisher: Wiley
                ISSN: 0962-1083
                ISSN (Print): 0962-1083
                Publication date (Electronic): Jun 1994
                Volume: 3
                Issue: 3
                Affiliations
                [1 ] Smithsonian Migratory Bird Center, National Zoological Park, Washington, DC 20008-2598.
                Article
                DOI: 10.1111/j.1365-294x.1994.tb00056.x
                PubMed ID: 8061879
                SO-VID: 2a792a47-c97d-40a9-96ec-925c20efd8fd
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