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Tag: "father" at biology news

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

... that children could inherit genetic damage from a father who smokes. Canadian researchers have demonstrated in mice that smoking can cause changes in the DNA sequence of sperm cells, alterations that could potentially be inherited by offspring. The results of their study are published in the June 1 issu...

Study investigates 'divorce' among Galapagos seabirds

Being a devoted husband and father is not enough to keep an avian marriage together for the Nazca booby, a long-lived seabird found in the Galapagos Islands off the coast of Ecuador. Many Nazca booby females switch mates after successfully raising a chick, according to a Wake Forest ...

Children of smokers have more than 5 times higher levels of a nicotine toxin

...ne in the urine – quadrupling it. Having a smoking father doubled the amount of cotinine, one of chemicals produced when the body breaks down nicotine from inhaled smoke to get rid of it. Sleeping with parents and lower temperature rooms were also associated with increased amounts of cotinine. Coti...

Philandering female felines forgo fidelity

...s not only were able to determine if more than one father contributed to a litter, but also which of the known male cheetahs in the study area had sired cubs. Surprisingly, few known males had, with only 21.3 percent being assigned paternity, although not all males in the study area had been sampled. At lea...

Pitt study notes decline in male births in the US and Japan

...who work with some solvents, metals and pesticides father fewer baby boys. We also know that nutritional factors, physical health and chemical exposures of pregnant women affect their ability to have children and the health of their offspring. We suspect that some combination of these factors, along with ol...

Female Antarctic seals give cold shoulder to local males

... and in the case of males, are more aggressive and father more offspring. It had long been assumed that the females were passive, simply 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...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...th. A study done in 1938 indicated that Napoleon's father died of stomach cancer. In 1961, an elevated level...nta said. That's because the autopsy of Napoleon's father described a tumor that might have been something other than gastric cancer. And because autopsies we...

ASU researchers test antibacterial effects of healing clays

...ist looking for ore deposits. She worked with 'the father of clay mineralogy,' Bob Reynolds, at Dartmouth College. Later, as a research associate at Louisiana State University, a colleague was studying geophasia ?eating clay, a behavior seen in animals and people, since the time of the aborigines. "In th...

Older fathers more likely to have autistic children

...btained draft board information and the age of the father for 318,506 individuals; age of the mother was available for 132,271 of those. Two hundred and eight individuals in the larger group (a rate of 6.5 per 10,000) and 110 in the group with both maternal and paternal ages (8.3 per 10,000) had a diagnos...

Blue eyes -- A clue to paternity

...arents does not have blue eyes, then the blue-eyed father is not the biological father. It is therefore reasonable to expect that a man would be more attracted towards a woman displaying a trait that increases his paternal confidence, and the likelihood that he could uncover his partner's sexual infidelity...

Cougar predation key to ecosystem health

...amed naturalist Aldo Leopold, often considered the father of wildlife ecology. "When park development caused cougar to begin leaving Zion Canyon in the 1930s, it allowed much higher levels of deer browsing," said Robert Beschta, an OSU professor emeritus of forest hydrology. "That set in motio...

Solvent exposure linked to birth defects in babies of male painters

...erage six times more likely than the carpenters to father congenitally malformed babies (e.g. defects of cardiovascular, gastrointestinal, urogenital and central nervous systems.) In addition, the painters exposed to the chemicals were 50 to 100 per cent more likely to produce low birth-weight babies, de...

Eminent inventor of DNA fingerprinting gains new recognition

...to answer such questions as: Who is the biological father of a child? Whose blood, sweat, hair or sperm has ...e for Biochemistry and Biophysics (named after the father of Alfred Heineken) is the oldest of the Heineken Prizes and has been awarded since 1964. Previous p...

Zebra finch males prefer females with exaggerated maternal traits

...he beak color of the mother orange and that of the father red; for another group, the mother got a red beak and the father an orange one. When the males reached adulthood, they were tested with females with a spectrum of be...

Scientists describe new African monkey genus ?first in 83 years

...enes passed only from mother to offspring and from father to male offspring. "Had we gotten these surprising results based on a single gene, we'd have been pretty skeptical," Olson says, "but each of the genes we analyzed either firmly supported the grouping of Kipunji with baboons or failed to support a cl...

The shape of life: research sheds light on how cells take shape

...es that govern it are far from clear. Alan Turing, father of modern computer science, suggested that the basis for pattern formation was chemical. New research conducted at Brown University and published in the Proceedings of the National Academy of Sciences supplies another surprising answer: Physical, as ...

Polynesia explorers created worldwide web of scientific knowledge

...766-1769; Germany's George Forster accompanied his father on Captain James Cook's second voyage of 1772-1775; and Adelbert von Chamisso, a native of France, served as a naturalist on the Russian Rurik voyage of 1815-1818. "Keen for curiosities of every kind, none more than the customs of strange peoples t...

US woman gives birth to baby from world's first frozen donor egg bank

...cky Division of Reproductive Endocrinology, is the father of triplets and has practiced infertility for over 15 years in both the academic university setting as well as private practice. Jeffrey Boldt, Ph.D., Scientific Director for CEI, has worked with many infertile couples over the past six years as he s...

Zebra finches remember songs dad sang

...ebra finches, Bengalese finches and canaries. The father contributes equally to childcare in zebra finch families and does all the singing, Vicario says. "In everyday English, 'song' and 'call' mean the same thing, but in scientific language, they're different," Vicario says. "Calls communicate information...

Does father know best?

... paternity--whether a man really is the biological father of his supposed children--has long been a topic of...of the time, that is, they were indeed the child's father more than 98 percent of the time. Men who were dubious about their fatherhood ?specifically men who ...

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