Figure 1. Reproductive phenotyping in Tac2^−/− male mice.

A, Testicular weight was similar between Tac2^−/− (black bar) and WT (white bar) males, and the presence of mature spermatozoa was present in the testes of both genotypes. B, Fertility was also not significantly different based on the latency to the first litter after pairing with a WT female, the average number of litters in a 12-week period and the average number of pups per litter. Sample sizes are indicated within the bars.