In this situation, it is a straightforward matter to cross one of the two strains to N2 males (or to generate a homozygous male stock from one of the mutant strains), and then cross the resultant heterozygous males to the second mutation to generate the a/+; b/+ trans-heterozygote.
Campbell County, Kentucky. Campbell County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 90,336. Its county seats are Alexandria and Newport. The county was formed on December 17, 1794, from sections of Scott, Harrison, and Mason Counties and was named for Colonel John Campbell (1735â1799), a Revolutionary War soldier and Kentucky legislator.
Daviess County, Kentucky. Daviess County (/ËdeÉªváµ»s/ or incorrectly /ËdeÉªviËz/), is a county in the U.S. state of Kentucky. As of the 2010 census, the population was 96,656. Its county seat is Owensboro, which was named for Colonel Abraham Owen, killed at the Battle of Tippecanoe. The county was formed from part of Ohio County on January 14, 1815. Daviess County is included in the Owensboro, KY Metropolitan Statistical Area.