. Carnegie Institution of Washington publication. 'M>. F2 Fi P- Biotype 1 Biotvpe 12 + + .^multitaeniata form multilineata form Fig. 48.—Graphic representation of the action of the form-determiner in the alteration of the color pattern of the pronotum. The second class shows wholly black, while the most common group shows black and a variable array of pattern, as shown in figure 48. In the least numerous group are found blacks that are both homozygous and heterozygous, and from these it is a simple matter to extract a homozygous-acting strain that has the melanothorax pronotal pattern in co
. Carnegie Institution of Washington publication. 'M>. F2 Fi P- Biotype 1 Biotvpe 12 + + .^multitaeniata form multilineata form Fig. 48.—Graphic representation of the action of the form-determiner in the alteration of the color pattern of the pronotum. The second class shows wholly black, while the most common group shows black and a variable array of pattern, as shown in figure 48. In the least numerous group are found blacks that are both homozygous and heterozygous, and from these it is a simple matter to extract a homozygous-acting strain that has the melanothorax pronotal pattern in combination with the determiner for multi- lineata, a narrow elongated type. Two test agents, races, are now available, each with the same pronotal complex but associated with the two different form-deter- miners, and each in pure homozygous-acting biotypes. 18. 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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