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Showing posts with the label genetics

We are indeed all Jock Tamson's bairns

With every generation you (nearly) double your number of ancestors because every individual has two parents – going back just 10 generations (200-300 years) you are likely to have around a thousand ancestors.

"When genetics researchers talk about common ancestry between people they usually mean that they are tracing the inheritance of particular sections of DNA or genes.And we know that different sections of our DNA have different patterns of genetic ancestry. This means that researchers can get very different estimates of how recently we share ancestors, depending on what they are looking at...
...look at mtDNA to follow ancestry passed along the female line. For mtDNA, everyone alive today shares a common ancestor who lived between 160,000 and 200,000 years ago.everyone alive today shares a common ancestor who lived between 160,000 and 200,000 years ago....
...look at Y chromosome DNA to follow ancestry through the male line, the most recent estimate is of a common ancestor who l…

Scots - the mongrel "race"

According to recent DNA research, the human species came very close to extinction during the last Ice Age. We know this because there ought to be far greater DNA variations than there actually are and providing evidence to suggest the total population of mankind towards the close of the Ice Age could have been as few as ten thousand people or less. More recently, DNA research from Leicester University and published in 2010, goes further and where eighty per cent of Caucasian males in Europe may have had ancestors who lived in regions known today as Iraq and Syria

Around 1,000 people have been tested in the past four months as part of the Scotland’s DNA project, and the preliminary results reveal the “astonishing” diversity of our genetic origins.

Almost 100 different groups of male ancestry have been found so far from all over Europe, and further afield, and 157 types of female DNA from Europe, Asia and Africa.

One per cent of Scotsmen, around 26,000 individuals, a…

Horse Sense

Millions of pounds spent each year on the sperm of race-winning horses. The owner of one superstar stud can earn £25 million a year. British breeders can typically expect to pay more than £500 a time in stud fees, with some American horses commanding fees of up to £10,000. Stallions reputed for producing good quality offspring come at a premium, and can fetch far higher fees.

Research published today will cast doubt on the rationale that bringing champion horses together will produce potentially race-winning foals. a horse's lineage is far less important than was previously thought. Genes account for only 10% of the prize money a horse wins in its lifetime

"The offspring of expensive stallions might tend to win more money, but not necessarily because they have inherited the best genes . It is likely those breeders best able to pay high stud fees are also those who are able to spend more on care of the horse, how it is trained, and who rides it - all of which will contribute mor…