Mating patterns of the Abbad tribe in Jordan

Article Abstract:

Maternal links, the type of economy, geographical location, and relatedness influence mating patterns in the Abbad tribe in Jordan. Ninety percent of marriages take place within the tribes and a third are between first cousins. The rate of mating types is directly related to the relationship between the partners, and the degree of relationship influences marriage between partners. The chances of marriage decrease with lesser relationship and greater geographic and tribal affiliation distance between the couples.

Social aspects, Marriage, Jordan, Tribes, Cross-cousin marriage, Cross cousin marriage

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Reliability versus validity of tests used in genetic identification

Article Abstract:

Validity of genetic identification tests is questionable although the tests are reliable. A highly reliable test will probably not be hundred percent valid though the tests are consistent and give reproducible results. A procedure used to detect the A antigen fails to reveal whether the individual has a blood type A or AB. Two out of seven probes are successful in detecting individual alleles of the HLA DQA1 alpha gene which is used in determining a person's genotype.

Methods, Analysis, DNA testing, DNA identification, Identification and classification, Human genetics, Criminals, Forensic genetics

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Assortative versus selective mating: is the distinction worthwhile?

Article Abstract:

The model of selective mating versus assortative mating is not useful for population biology. The model was proposed in 1968 as an analysis of nonrandom mating, and it has been influential on subsequent research. A more useful model would be fertility selection, or other interpretations of nonrandom mating which are obscured by the old model.

Models, Mate selection, Population genetics, Population biology

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