. Carnegie Institution of Washington publication. 258 The Mechanism of Evolution- in Leptinotarsa In F5 there were 4 with almost totally black pronotmn, or biotype 2 form, and in Fb and later such were constantly present in the selected strain. Superficial examination of the culture would at once decide that biotype 4 had been changed F4 F3 F2 Fi m m mm. p- Fig. 43.—Graphic representation of a normal cross between a true homozygous acting biotype 1 and biotype 4 in L. multitwniata. to biotype 2, and the single male in F^ would ordinarily be interpreted as evi- dence of the modification to biot
. Carnegie Institution of Washington publication. 258 The Mechanism of Evolution- in Leptinotarsa In F5 there were 4 with almost totally black pronotmn, or biotype 2 form, and in Fb and later such were constantly present in the selected strain. Superficial examination of the culture would at once decide that biotype 4 had been changed F4 F3 F2 Fi m m mm. p- Fig. 43.—Graphic representation of a normal cross between a true homozygous acting biotype 1 and biotype 4 in L. multitwniata. to biotype 2, and the single male in F^ would ordinarily be interpreted as evi- dence of the modification to biotype 1. This I tested out as follows: If the extreme male of F^ is a biotype 1, or even partly so, breeding would test it fully. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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