The phrase "are swapped between" is correct and usable in written English.
It can be used when describing a situation where two or more items or elements are exchanged or interchanged with each other.
Example: "In this experiment, the variables are swapped between the two groups to observe the effects."
Alternatives: "are exchanged between" or "are interchanged between".
Others think that genes are swapped between species (particularly among single-celled organisms) sufficiently frequently that if you look back far enough, the different genes making up an organism's genome will have different genealogies.
Other studies, focusing on how greenhouse gases are swapped between the land, sea and atmosphere, have suggested that scientists have underestimated the speed and strength with which serious climate change will strike.
On the other chromosomes, selection is more focused on individual genes because chunks of DNA are swapped between the members of each pair of chromosomes before the generation of eggs and sperm.
At the Café Krieghoff, on the restaurant-lined rue Cartier, well-dressed patrons talking on cell phones sit next to scruffy student-types reading thick books; newspapers and gossip are swapped between tables and there is a satisfying clatter of food being served.
All data beyond that point in either chromosome are swapped between the two parent chromosomes.
At a single crossover point, two parents selected and all data beyond that point with certain probability are swapped between two parents.
If you have one light with two switches (for example, a wall switch and a bedside table switch), sometimes the "on" and "off" will be the opposite of what you might expect because you are swapping between switches.
Some political scenes were swapped between tonight's episode, by Mr. Simon, and next week's by Mr. Price.
She was swapped between day and night shifts and kept in an eight-person dormitory where she barely knew the names of her fellow sleepers.
"How safe is it?" he asked, pressing his hand against one of the doors, which have removable plastic panels that can be swapped between cars.
The inquiry is focusing on claims that a small number of the most difficult prisoners were swapped between the two category-B men's jails in May and June of this year.
