gene pool
"A gene pool is like a gumball machine containing red, blue, yellow, and green balls (alleles). For 25 cents and a turn of the knob, two gumballs are dispensed from the machine. Two red gumballs, a red and a blue, a yellow and a green, or any of the other possible color combination may result from any one gumball purchase."
"The gene pool is like a refrigerator full of cartons of different kinds of milk ... "
"Having a diverse gene pool is like having a large toolbox filled with tools that you don't use daily but that someday you might need "
"My sister is in an interracial relationship (my family's gene pool is like a fruit punch) and I haven't heard any problems from her end. "
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.