Switching Checkerboard lines
Lineages that include two breeds all the way through. In first generation Females are all one breed (let's say X), males all the other (Y), in the next generation the females are all Y-dragons and the males are X instead, third generation is switches back as in first generation and so on.
Titling lineages as in first generation: Female breed x Male breed.
Albino x Balloon.
Albino x Nocturne.
Balloon x Flamingo Wyvern.
Black x Gold.
Black x Magi.
Canopy x Seasonal.
Canopy x Whiptail.
Cavern Lurker x White.
Coastal Waverunner x Nebula.
Coastal Waverunner x Twilight.
Coastal Waverunner x Water.
Dark Green x Green.
Dark Green x Water.
Dark Green x White.
Daydream x Striped.
Deep Sea x Silver.
Deep Sea x Skywing.
Deep Sea x Waterhorse.
Desipis x Aria.
Dorsal x Albino.
Dorsal x Magma.
Electric x Albino.
Electric x Magma.
Frilled x Dorsal.
Gilded Bloodscale x Two-Headed.
Glory Drake x Ochredrake.
Gold x Black.
Gold x Magi.
Gold x Red.
Gold x Skywing.
Golden Wyvern x Nebula.
Gold-horned Tangar x Frilled.
Green x Dark Green.
Green x Stone.
Green x Striped.
Guardian x Water Walker.
Harvest x Albino.
Hellfire Wyvern x Shadow Walker.
Horse x Waterhorse.
Magi x Black.
Magi x Frilled.
Magi x Green.
Magi x Skywing.
Magi x Water.
Magi x Whiptail.
Magma x Whiptail.
Mint x Balloon.
Mint x Gold.
Mint x Ridgewing.
Mint x Silver.
Neotropical x Seasonal.
Neotropical x Waterhorse.
Nocturne x Red.
Pink x Daydream.
Pink x Purple.
Purple x Albino.
Purple x Spitfire.
Red x Guardian.
Red x Striped.
Red x Water.
Seasonal x Red.
Seasonal x Skywing.
Shadow Walker x Frilled.
Silver x Dorsal.
Silver x Pink.
Silver x Ridgewing.
Silver x White.
Skywing x Deep Sea.
Skywing x Mint.
Skywing x Water.
Spitfire x Whiptail.
Spotted Greenwing x Albino.
Spotted Greenwing x White.
Stone x Green.
Stone x Guardian.
Storm x Dorsal.
Striped x Balloon.
Swallowtail x White.
Tsunami Wyvern x Red.
Twilight x Bleeding Moon.
Twilight x Seasonal.
Water x Daydream.
Water x Green.
Water x Ice.
Water x Magi.
Water x Mint.
Water x Silver.
Water x Skywing.
Water x Storm.
Waterhorse x Gold.
Waterhorse x Pink.
Water Walker x Black.
Whiptail x Spitfire.
White x Dorsal.
White x Water.
Titling lineages as in first generation: Female breed x Male breed.
Albino x Balloon.
Albino x Nocturne.
Balloon x Flamingo Wyvern.
Black x Gold.
Black x Magi.
Canopy x Seasonal.
Canopy x Whiptail.
Cavern Lurker x White.
Coastal Waverunner x Nebula.
Coastal Waverunner x Twilight.
Coastal Waverunner x Water.
Dark Green x Green.
Dark Green x Water.
Dark Green x White.
Daydream x Striped.
Deep Sea x Silver.
Deep Sea x Skywing.
Deep Sea x Waterhorse.
Desipis x Aria.
Dorsal x Albino.
Dorsal x Magma.
Electric x Albino.
Electric x Magma.
Frilled x Dorsal.
Gilded Bloodscale x Two-Headed.
Glory Drake x Ochredrake.
Gold x Black.
Gold x Magi.
Gold x Red.
Gold x Skywing.
Golden Wyvern x Nebula.
Gold-horned Tangar x Frilled.
Green x Dark Green.
Green x Stone.
Green x Striped.
Guardian x Water Walker.
Harvest x Albino.
Hellfire Wyvern x Shadow Walker.
Horse x Waterhorse.
Magi x Black.
Magi x Frilled.
Magi x Green.
Magi x Skywing.
Magi x Water.
Magi x Whiptail.
Magma x Whiptail.
Mint x Balloon.
Mint x Gold.
Mint x Ridgewing.
Mint x Silver.
Neotropical x Seasonal.
Neotropical x Waterhorse.
Nocturne x Red.
Pink x Daydream.
Pink x Purple.
Purple x Albino.
Purple x Spitfire.
Red x Guardian.
Red x Striped.
Red x Water.
Seasonal x Red.
Seasonal x Skywing.
Shadow Walker x Frilled.
Silver x Dorsal.
Silver x Pink.
Silver x Ridgewing.
Silver x White.
Skywing x Deep Sea.
Skywing x Mint.
Skywing x Water.
Spitfire x Whiptail.
Spotted Greenwing x Albino.
Spotted Greenwing x White.
Stone x Green.
Stone x Guardian.
Storm x Dorsal.
Striped x Balloon.
Swallowtail x White.
Tsunami Wyvern x Red.
Twilight x Bleeding Moon.
Twilight x Seasonal.
Water x Daydream.
Water x Green.
Water x Ice.
Water x Magi.
Water x Mint.
Water x Silver.
Water x Skywing.
Water x Storm.
Waterhorse x Gold.
Waterhorse x Pink.
Water Walker x Black.
Whiptail x Spitfire.
White x Dorsal.
White x Water.