How Heritable is Innate Behaviour?
Article first published online: 26 APR 2010
1981 Blackwell Verlag GmbH
Zeitschrift für Tierpsychologie
Volume 55, Issue 1, pages 1–18, January-December 1981
How to Cite
JACOBS, J. (1981), How Heritable is Innate Behaviour?. Zeitschrift für Tierpsychologie, 55: 1–18. doi: 10.1111/j.1439-0310.1981.tb01256.x
- Issue published online: 26 APR 2010
- Article first published online: 26 APR 2010
- Received: September 26, 1980; November 11, 1980
The relations between innateness and heritability of behaviour, environmental heterogeneity, genetic diversity of populations, and rates of evolution of behaviour are discussed on the basis of a simple quantitative model. An index I of innateness is proposed which can be related to the heritability index h2. I and h2 are positively related but the degree of correlation depends on the genetic variability of the population, the heterogeneity of the conditioning environment, and the level of spontaneous behavioural variability. The influence of innateness on rates of evolution is moderate. The frequency distributions of I and h2 are unimodal, there is no evidence for an innate-acquired dichotomy.