If the man in your life has gorilla-like tendencies, this could be why. Scientists have discovered a strong similarity between the human and gorilla Y chromosome. Both have more in common with each other than they do with the same male-specific chromosome in the chimpanzee, our closest animal cousin. The discovery was made by scientists who compared the DNA sequence of the Y chromosome in all three species. Lead researcher Professor Kateryna Makova, from Pennsylvania State University in the US, said: "Surprisingly, we found that in many ways the gorilla Y chromosome is more similar to the human Y chromosome than either is to the chimpanzee Y chromosome. "In regions of the chromosome where we can align all three species, the sequence similarity fits with what we know about the evolutionary relationships among the species - humans are more closely related to chimpanzees. "However, the chimpanzee Y chromosome appears to have undergone more changes in the number of genes and contains a different amount of repetitive elements compared to the human or gorilla. Moreover, a greater proportion of the gorilla Y sequences can be aligned to the human than to the chimpanzee Y...
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