Produced in 1976 by the Institute of Biology as part of its Studies in Biology series, this booklet examines reproduction in animals that give birth to live offspring (viviparity). It considers viviparity as an adaptation evolved in diverse situations as a solution to diverse problems. The booklet uses the term 'viviparous' to include all species in which the eggs are fertilized internally and are retained within the body of the mother for a significant time before deposition.
Sections in the booklet look at topics that include:
* What is viviparity?
* Strategies for reproduction
* Diversity of viviparity
* Viviparity as adaptation