The Male Y Chromosome May Be Disappearing

The Male Y Chromosome May Be Disappearing

There’s new information, at least theoretically, that the male Y chromosome could be disappearing. This work was done at Penn State. It’s in the journal PLoS Genetics. Researchers say there is a dramatic loss of genes from the human Y chromosome and it could eventually lead to its complete disappearance over the next million years or so. While some genes seem to be essential, like those for sperm development, most have been lost and the researchers say that they found evidence that many are on a track to disappear as well. If this happens, researchers say a new pair of chromosomes will likely start down the path of becoming X and Y sex chromosomes. It’s pretty fascinating how you can actually see mutations occur, but this is essentially how the world has developed; changes and development. With those differences came different people.

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Men and Women Need to Be Studied Independently

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We know that men and women are very different, but this becomes extremely clear when we look at diseases or the differences in the way certain drugs work in men and women. This is why it’s so important that men and women continue to be studied independently. In the past, men were almost exclusively studied and women were treated based on the information acquired from studying men. But it did not take long to realize that problems like heart attack had very different symptoms in men and women and also treatments were not cookie-cutter. As funds were reduced to conduct important studies, it is important to study both sexes and gather important independent information.

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Without References People Walk in Circles

Without References People Walk in Circles

Without a guide, people really do walk in circles. This report came out of Germany in the journal “Current Biology.” Stories about people who end up walking in circles when lost may actually be true. Without absolute references like the sun or the moon, people attempting to walk in a straight line in unfamiliar territory will instead walk in circles. Researchers had people attempt to walk straight in one direction for several hours through a flat forest or the Sahara desert. Some walkers had the sun or moon to guide them, while others walked when the clouds obscured their reference point. When the sun or moon was visible, subjects walked a perfectly straight line, but whenever this reference was absent, subjects invariably walked in circles, often crossing over their own paths several times each.

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