A Drosophila second chromosome that carried a recessive lethal mutation, l(2)g14, was maintained in a stock with a balancer chromosome marked with a dominant mutation for curly wings. This latter mutation, denoted Cy, is also associated with a recessive lethal effect-but this effect is different from that of l(2)g14. Thus, flies survive, and they have curly wings. Flies without the Cy mutation have straight wings. A researcher crossed females to males that carried second chromosomes with different deletions (all homozygous lethal) balanced over the Cy chromosome (genotype ). Each cross was scored for the presence or absence of progeny with straight wings.

In which band is the lethal mutation l(2)g14 located?

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Cross Location of deletion Non-Curly progeny 12 3 4 5 6 7 8 9 10 1112 no no yes 4 yes no 2. 3.