Fig. 1.

Typical realisations of a the Kingman coalescent, where lineages merge at rate 1 per pair, b a delayed Kingman coalescent, where lineages merge at rate ${\beta }^2<1$ per pair, and c the seed bank coalescent, see Def. 1.2. In the seed bank coalescent there are two kinds of lines: blue lines are active lineages, while purple lines are dormant lineages. The differences can be seen in the (asymptotic) expected time to the most recent ancestor when started with a sample of n (active and m dormant) individuals given on the time-axis (colour figure online)