. Contributions from the Laboratory of Plant Genetics. 216 THE AMERICAN NATURALIST [Vol. XLVII The F2 selections gave the results expected in Fj. Counting the total progeny (248) from F1 and F2 hetero- zygotes, the figures are: Normal Heterozygote Abnormal 68 124 56 62 124 62 The F2 heterozygotes were in appearance duplicates of the ¥1 individuals and after a little experience could be easily distinguished from the abnormal homozygotes. Clean segregates were obtained from the heterozygous. Fig. 2. F2 segn gates from the abnormal x normal (304 X 402) Nicotiana. Abnormal homozygote, heterozygote
. Contributions from the Laboratory of Plant Genetics. 216 THE AMERICAN NATURALIST [Vol. XLVII The F2 selections gave the results expected in Fj. Counting the total progeny (248) from F1 and F2 hetero- zygotes, the figures are: Normal Heterozygote Abnormal 68 124 56 62 124 62 The F2 heterozygotes were in appearance duplicates of the ¥1 individuals and after a little experience could be easily distinguished from the abnormal homozygotes. Clean segregates were obtained from the heterozygous. Fig. 2. F2 segn gates from the abnormal x normal (304 X 402) Nicotiana. Abnormal homozygote, heterozygote and normal homozjgote. The grandparents in appearance are duplicates of the two homozygotes. 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 Bussey Institution. Boston : [s. n. ]
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