Fig. 4

Inversions in Culex quinquefasciatus. a. Heterozygote for inversion a, tentatively mapped to the arm 2L (a/a+). Polytene chromosomes were obtained from malpighian tubules, and banding pattern does not completely correspond to the cytogenetic map (Fig. 3) based on chromosomes from salivary glands. b. Heterozygote for inversion b on the arm 3R (b/b+), near centromere. Centromere is abbreviated as C, right arm as R, left arms as L