Allelic Expression of Drosophila Protamines during Spermatogenesis

Figure 1

D. simulans (a–f) and D. mauritiana (g–l) sperm heads possessing GFP-tagged (a–c, g–i) or RFP-tagged (d–f, j–l) protamine. Sperm containing the protB-GFP transgene only fluoresce green (a, c, g, i) and do not reveal any red light autofluorescence (b, c, h, i). Similarly, sperm containing only the protB-RFP transgene only fluoresce red (e, f, k, l), with no green autofluorescence (d, f, j, l). Images (a–c) and (g–l) were taken at 40x magnification, while images (d–f) were taken at 63x magnification. Bars represent 10 μm.

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