Sex is 'nothing but trouble', geneticist says

Apr 03, 2013

(Phys.org) —Sex determining genes in marsupials have shed some light on how the Y chromosome, which determines the male sex in humans, will quickly degenerate and eventually disappear, according to a world-renowned evolutionary geneticist.

During a lecture tonight, hosted by the Australian Academy of Science, thinker-in-residence with the University of Canberra's Institute for Applied Ecology Jennifer Graves will describe how the map of the marsupial genome is unlocking genetic secrets with deep implications for human health.

"Sex is nothing but trouble… genetically," Professor Graves said. "The chromosome that carries the sex determining gene loses active genes, so this creates the problem that have different dosages of genes. Males have only one copy of the , which contains more than a thousand genes, while Y has only 45 genes. If one of these is mutated, they have no backup."

Professor Graves is an evolutionary geneticist who works on Australian animals, including kangaroos and platypus, devils (Tasmanian) and dragons (lizards). Her research team uses their distant relationship to humans to discover how genes and chromosomes and regulatory systems evolved, and how they work in all animals including us humans.

Using , her laboratory has been able to answer questions about what genes are on the and how do they work as well as explore the origin, function and fate of genes and chromosomes, famously predicting that the will disappear in a few million years.

"You'd think something as important as sex wouldn't change much in evolution - but it's exactly the opposite," Professor Graves said. "The genes and chromosomes that control sex really self-destruct in a blink of an evolutionary eye. When a chromosome acquires a new sex determining gene, this is the kiss of death for the chromosome; it will degenerate quickly and inexorably."

In addition to being thinker-in-residence with the University's Institute for Applied Ecology Professor Graves is distinguished professor at the La Trobe Institute of Molecular Science, and ANU emeritus professor and University of Melbourne Professorial fellow.

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2 / 5 (4) Apr 03, 2013
Ohhh, BOY! I wish I could see that day! A world of women, with their innate genetic superiority ; Give Them all the money, power, wealth, and position, till they dominate and rule the heavens and the earth. Plaques, portraits of Oprah Winfrey everywhere & without end. A solar system fully populated with women who have EVERYTHING! Since 1975 in every country in the west, university and college enrolment is dominated by women. Any minute now, THE BIG BREAKOUT FOR WOMEN! Wherever money is made or printed, women grow in representation - so be it. Yet many still blame men for the failure of women to utterly dominate the work place, politics, the boardrooms, so MUCH hinders them! Men keep making Googles, Apples, Facebooks, General Motors, Twitters and promote women within. Men, no longer heard, just keep building and innovating. Then suddenly, NO MEN! WOMEN MAKE WOMEN BABIES @ the Justin Bieber sperm bank. Evolution DOES have a sense of humour and men get 2 see the comedy from heaven!
word-
kochevnik
3 / 5 (4) Apr 03, 2013
"All men are jerks, all women are psychotic." Kurt Vonnegut
210
1 / 5 (1) Apr 05, 2013
"All men are jerks, all women are psychotic." Kurt Vonnegut

Oh really now?!! Let's see...

"CNN) -- "Thank you, Mr. President, you're not such a bad-looking guy yourself."

That would have been my response if I were California Attorney General Kamala Harris, who finds herself in the middle of a media dustup after President Obama introduced her as: "by far the best-looking attorney general in the country," at a fundraiser earlier this week.
Harris is a beautiful woman. She's also super intelligent and accomplished, which the president also noted. In fact, he lauded her professional merits first..."
Give all the praise and credit and merit you want, THEY will run to ONE WORD or phrase and pitch a fit and ignore ANYTHING else you said. If she's great at everything and someone says so, it better not be a man. Hey if Evolution removes us, it done did us a favor! If they cant get a date, it's a mans fault, if they can get a date, they are traitors to all women.
word!