The process by which such behaviour arises is often called kin selection.

If this were so, kin selection could operate only in species of high intelligence.

In practice, the early stages probably require the operation of kin selection.

It may be regarded as a mechanism of kin selection.

This is the fundamental principle behind the theory of kin selection.

Charles Darwin was the first to discuss the concept of kin selection.

Critics of this theory point out that kin selection is not unique to humans.

It's all due to the operation of "kin selection" during evolution.

What's more, kin selection itself may complicate race relations in various subtle ways.

This observation, they believe, throws doubt on the importance of kin selection.

A wide variety of species have displayed kin selection as an adaptive behavior.

Much of this behavior occurs due to kin selection.

And kin selection cannot explain it - the ant queens are not related.

The result also show gender difference in kin selection which men are more affected by the cues of similar genetic based than women.

Evolutionary game theory explains this altruism with the idea of kin selection.

If either of these two assumptions is violated, then the kin selection hypothesis would not be supported.

The second misunderstanding concerns the ideas which must be present in an animal's mind if kin selection is to operate.

'The role of kin selection is that in competition between related males, it makes the costs higher and the benefits lower,' he says.

Because of their altruistic nature, they follow the rules of kin selection.

Animals may increase their inclusive fitness through kin selection.

The evolution of social behavior by kin selection.

In addition to kin selection and direct reciprocity, he shows that:

Additional species have shown that kin selection is a dominant driving force for cooperative breeding.

It is this point which drives the kin selection theory of how eusociality evolved.

Cooperation (without kin selection) must evolve to provide benefits to both the actor and recipient of the behavior.