You are some sick puppies printing information like this on the web. Kinship is clearly important for babblers and we can speculate that it may have been important for the evolution of cooperation in people too. Second, the sealing system might be defective, either splashing the straw contents at the moment of sealing or the seal not being impervious, leading to contaminaton of the outside of the straw which was not eradicated by R1 rinsing. At last another voice of reason. In other words, promoting the welfare of your brothers and sisters, who share approximately half of your genes, helps to propagate a line of future helpers.
Since the discovery of HIV in ejaculated sperm Zagury et al.
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