How do animals know not to breed with their siblings/family members?

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How do animals know not to breed with their siblings/family members?

In: Biology

2 Answers

Anonymous 0 Comments

In many animal species, sense of smell plays a role here. It is theorized that the smell receptors for sexual pheromones react unfavorably to close relatives’ pheromones. This is also a reason why there are dating shows where the candidates first get a chance to “smell each other” before being actually introduced.

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