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Tag: "paternity" at biology news

New miniaturised chip dramatically reduces time taken for DNA analysis

...n be applied to many different tasks, ranging from paternity tests and identifying people to detecting genetically modified food, identifying bacterial strains in foodborne illnesses and testing genetic toxicity in new drugs. Once mass production of the sensors begins, their cost and availability will be simil...

New DNA 'fingerprinting' technique separates hemp from marijuana

...epeats," which are used to identify individuals in paternity and criminal cases, lack the power to distinguish Cannabis cultivars unequivocally. In tests with three different cultivars of hemp and one of marijuana, the DNA fingerprints of all the cultivars were distinct and nonoverlapping. Weiblen and Shann...

Does father know best?

... differs across cultures and to what extent men's paternity assessments reflect actual biological paternity. ... not believe to be theirs." Anderson compared the paternity test results for men with high paternity confidence to the results for men with low paternity confid...

Researchers find that bumblebees' flower choice matters

..." Karron says. Who's your daddy? Calculating paternity could be a nightmare. Because pollen from multiple monkey flower plants can be deposited during a single bee visit, seeds produced by one flower can be "sired" by pollen from up to nine different plants. So Karron uses genetic markers to unambiguo...

Female pronghorns choose mate based on substance as well as show

...onghorn individuals in the population and assigned paternity to the offspring. "The females' mate sampling creates a small group of males that each year sire more than one-half of all young," said Byers, who is currently serving as a program officer in NSF's biological sciences directorate. "These are the ma...

Blue eyes -- A clue to paternity

Before you request a paternity test, spend a few minutes looking at your child's eye color. It may just give you the answer you're looking for. According to Bruno Laeng and colleagues, from the University of Tromso, Norway, the human eye color reflects a simple, predictable and ...

Older fathers more likely to have autistic children

...is important to keep in mind, however, that age at paternity is influenced by the sociocultural environment and varies across societies and over time," they continue. "In a given population, a change in the sociocultural environment could produce a change in paternal age at birth. In theory, it could thereby...

Female Antarctic seals give cold shoulder to local males

...ly mating with their nearest male. However, using paternity tests, the scientists demonstrated that only a quarter of the females conceived to their nearest male. Dr Joe Hoffman, at the Department of Zoology, University of Cambridge, said: "Many mammalian species have mating systems that were traditionally...

Philandering female felines forgo fidelity

...ional Park of Tanzania, focused on determining the paternity of cheetahs through the use of fecal samples that were then subjected to genetic testing. By comparing individual genetic micro-satellites from 171 samples, researchers not only were able to determine if more than one father contributed to a litter, ...

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