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Crossing over creates genetic variation by exchanging DNA between two nonsister chromatids to produce genetically unique chromosomes. The process of crossing over occurs during meiosis. More »

www.reference.com Family Genealogy

Crossing over in meiosis results in genetic recombination, which is responsible for the genetic diversity of a population. Genetic recombination and natural selection are the driving forces behind evolution. It causes mo... More »

www.reference.com Science Biology Cells

Crossing over is the process by which a section on one homologous chromosome breaks off and reattaches on the other homologous chromosome. Homologous chromosomes come in pairs, with one inherited from the mother and the ... More »

www.reference.com Science Biology
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Genetic variation is important because a population has a better chance of surviving and flourishing than a population with limited genetic variation. Genetic diversity also decreases the occurrence of unfavorable inheri... More »

www.reference.com Science Biology Molecular Biology & DNA

Find your heritage by submitting a DNA test to a laboratory for analysis by geneticists specializing in genealogy. Many DNA analysis services are available for use by private parties seeking answers about their backgroun... More »

www.reference.com Family Genealogy

Use the Family Tree DNA test kit by rubbing the bristle end of the swab that comes in the kit against the inside of the cheek of the person to be tested to collect cells, and then sending the swab to a lab for genetic te... More »

www.reference.com Family Genealogy

According to BBC News, it is highly unusual but possible that African DNA from those people brought to other continents could result in two fair-skinned or "white" parents producing a dark-skinned child. BBC News reporte... More »

www.reference.com Family Genealogy