Prehistoric human – Research of male Y chromosome

Prehistoric human - Human

Prehistoric human – Research of male Y chromosome

Prehistoric human – Thanks to the research of the male Y chromosome, scientists discovered when he lived approximately ancestor of all men. At about the same time as the geneticists appeared primeval mother of all women. Based on a thorough comparison of the genetic material, the researchers came to the conclusion that a hypothetical Adam lived approx. 126-150 thousand years ago.

Trouts pretend orgasm

Trouts pretend orgasm - Brown trout (Salmo trutta)

Trouts pretend orgasm

Trouts pretend orgasm – Trouts to spawn choose a place with shallow, calm waters and sandy or rocky bottom. In a dig belly oval cavity to half a meter in length. Which are used to make fertilized eggs. For a male signal to fertilize eggs is the moment in which the female opens his mouth and begins to shake. Then after a few seconds, the female lays eggs. If male is in a bad position or for some reason it considers that it is not the right candidate for father of her offspring, suspend the submission of eggs. The male, however, can not withhold production roes, and therefore to deceive the male, the female begins to fake an orgasm.

Cardiovascular disease risk – Higher among bald men

Cardiovascular disease risk - Bald Man's Nape

Cardiovascular disease risk – Higher among bald men

Cardiovascular disease risk – Higher among bald men. Up to about 1/3, compared to the other men. Tests on 37 thousand. men carried Japanese scientists. Hair loss depends on the activity of male hormones, which also accelerate hardening of the blood vessels, or the effects of atherosclerosis.

Most capable chimpanzees – Expert on sign language

Most capable chimpanzees - Chimpanzee typing

Most capable chimpanzees – Expert on sign language

Most capable chimpanzees – Expert on sign language was the famous female chimpanzee Washoe, who knew 350 words and transferred their skills to young. The male chimpanzee Ayumu, grown at the University of Kyoto, Japan, at the age of 5 years defeated several Japanese students in a computer memory game.

Male breast cancer – Malignant lumps also in men

Male breast cancer - Male breast nipple

Male breast cancer – Malignant lumps also in men

Male breast cancer – Oncologists are increasingly recognizing that malignant breast lumps also appear in men. In the UK are diagnosed with breast cancer approx. 400 men per year. Patients are usually in shock, because not enough that they did not expect that he could touch them such a condition, it is often consider this a shameful affliction.

Suicides statistic – Increased risk for men

Suicides statistic - Ryszard Siwiec, 10th Anniversary Stadium, Warsaw, 1968

Suicides statistic – Increased risk for men

Suicides statistic – Being a man is associated clearly with an increased risk. For one woman the dying by his own hand for as much as 6 men. Prof. Maria Jarosz, sociologist PAN (Polish Academy of Science), in its recent publication devoted to suicide examine cases from the past 60 years and found a 400% increase in the number of male suicides.

Male education – Teachers today are mostly women

Male education - Afghan college entrance exam day

Male education – Teachers today are mostly women

Male education – Teachers today are mostly women – Is one of the most female-dominated professions: nearly 600 thousand. Females there were a little over 100 thousand. men. Maybe men should get additional points in the recruitment to the teaching profession or the internal verification. A study by the London School of Economics argues that students put more effort and achieve better results when they are taught by men. The results of the experiment showed that boys cut their expectations, the exam evaluate teachers.