Figure 4From: The fitness consequences of inbreeding in natural populations and their implications for species conservation – a systematic map Types of inbred and non-inbred crosses used to assess the costs of inbreeding. (a) Number of studies by cross type for inbred and non-inbred crosses (b) Frequencies of combinations of inbred and non-inbred crosses comprising study designs. N/A denotes uninformative comparisons for inbreeding responses with bracketed numbers showing the number of studies.Back to article page