How the human penis lost his spikes

Scientists are trying that are the reasons, why humans and chimpanzees have key differences. History of HIGHLIGHTSHumans a change in the genome is missing that penis spine, sensory WhiskersSome, scientists suspect "turn on", that the absence of spines encouraged BondingChimpanzees pair and both mice penis spikes and sensory whiskers (CNN) – have you read the headline, and it probably giggling. Go ahead. Refer to your system. Then inhale deeply and consider how evolution a few specific parts of the body concerned, and why. Some are humans and chimpanzees parts more than 97% of the DNA, but it fairly obvious differences in appearance, behavior and intellect. Scientists are now more than ever, learn what makes us uniquely human. We know that people have bigger brains and within the brain, a larger angular gyrus, a region associated with abstract concepts. Also male chimpanzees have smaller penises than people, and their penises have thorns. Not like Porcupine needles or something, but small top projections on the surface, basically the organ make the bumpy. A biologist at Stanford University wanted to continue to investigate why humans and chimpanzees have such differences Bejerano Gill, school of medicine and colleagues. Analyzes the genomes of humans and closely with primates and more than 500 regulatory regions-sequences in the genome responsible for the control of generations, the chimpanzees and other mammals, but not discovered people. In other words, they make a list of the DNA which has disappeared from the human genome during millions of years of evolution. Results from their study will be published in the journal nature. Think of it as light bulbs and their switches, where the light bulbs are gene and the switch are these controlling DNA sequences. If it can not onion, the switch does not turn on the light. Now think of, it is a PEAR and enable five switches at different times in different places. If the switch way take one, works the bulb in the four other contexts, but not in the fifth. This study deals with two specific switches. Bejerano and colleagues took the switch information from a chimpanzee genome and in the main "connected to" to a reporter gene, a gene, whose Auswirkungen scientists can track how an organism develops. You injected egg to see the reporter gene in a mouse, what would do the switch.