Deletion which removes the miRNA cluster containing the mir-307a and mir-307b miRNAs. A single P1\loxP site is present at the site of the deletion.
Embryos derived from Df(2R)mir-307a-307b-KO/Df(2R)BSC132 embryos show a significant increase in the number of primordial germ cells compared to embryos from control females.
Homozygous viable. Homozygous males and females are fertile.