A P{GawB} element has been inserted 10 nucleotides upstream of the mir-310 cistron transcription initiation site ( 2R:20584328 - R6).
Heterozygous P{GawB}mir-310L70 mutant flies (comprised of mir-310L70, mir-311L70 and mir-312L70) exhibit increased sensitivity to nicotine. Homozygous P{GawB}mir-310L70 flies exhibit a more severe phenotype. Responses to heat and ether are normal.
mir-312L70, mir-311L70, mir-310L70 is an enhancer of chemical sensitive | dominant phenotype of esgL4
One copy each of P{GawB}mir-310L70 (comprised of mir-310L70, mir-311L70 and mir-312L70) and esgL4 results in increased sensitivity to nicotine compared to esgL4/+ alone.
The increase nicotine sensitivity seen in mir-310L70 mutant flies is reverted upon excision of the P-element.