Altruism is an ethical doctrine that holds that individuals have a moral obligation to help, serve, or benefit others, if necessary at the sacrifice of self interest.
Altruism: Helping others without direct benefit, and sometimes harm, to oneself.
Amino acids: Building blocks of peptides. Each amino acid is encoded by DNA. See Amino Acids and Biochemical Grouping of Amino Acids.
Altruism
A form of behaviour in which an individual risks lowering its fitness for the benefit of another.
Related Terms:
Fitness
Also called adaptive value.
Altruism between social insects and littermates has been explained in such a way. Altruistic behavior in some animals has been correlated to the degree of genome shared between altruistic individuals.
altruism The principle or practice of unselfish concern for, or devotion to, the welfare of others.
altruistic preservation A philosophy of preserving nature for its own sake.
We and they share behaviors that are characteristic of highly social primates, including nurturing, cooperation, altruism, and even some facial expressions. Genes are evolutionary glue, binding all of life in a single history that dates back some 3.
This is called reciprocal altruism. A good example of this is blood sharing in vampire bats. In these bats, those lucky enough to find a meal will often share part of it with an unsuccessful bat by regurgitating some blood into the other's mouth.
 See also: Species, Evolution, Biology, Gene, Genetics
  
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