Annual report of the Maine Agricultural Experiment Station . f of the progeny will bear pea combsand half will bear single combs. In the one family where we 112 MAINE AGRICUI^TURAI. EXPERIMENT STATION. I9IO. were apparently dealing with a heterozygote individual in re-gard to comb the figures Avere as follows:—Mating 426 pro-duced II adult offspring distributed, as to comb condition asfollows: Males, 2 perfect single, 2 intermediate, i perfect pea;females, 3 perfect single, 2 intermediate and i pea. Puttingthe intermediate and pea together as showing he pea charac-teristic in some degree, we h
Annual report of the Maine Agricultural Experiment Station . f of the progeny will bear pea combsand half will bear single combs. In the one family where we 112 MAINE AGRICUI^TURAI. EXPERIMENT STATION. I9IO. were apparently dealing with a heterozygote individual in re-gard to comb the figures Avere as follows:—Mating 426 pro-duced II adult offspring distributed, as to comb condition asfollows: Males, 2 perfect single, 2 intermediate, i perfect pea;females, 3 perfect single, 2 intermediate and i pea. Puttingthe intermediate and pea together as showing he pea charac-teristic in some degree, we have for the total 5 perfect singlesand 5 peas or intermediate peas produced in this family. Thisis in exact accord with Mendelian expectation on the suppo-sition that in this family we are dealing with a heterozygousCornish Indian Game female as the mother. Whether this isthe true explanation of the occurrence of single combs in thisfamily is not, of course, absolutely certain. The character of the single combs obtained in this family isshown in Fig. Fig. 79. Photograph of head of hybrid ^ showing perfect single comb. The explanation of the occurrence of single combs througha heterozygous condition of one parent by no means holds forall matings where such combs were obtained. In the othermatings producing single combs besides 426 there would usu-ally be only one or two single-combed birds out of a family of10 to 20 peas or intermediates. 4. Detailed data regarding the condition of the comb inthese hybrids may next be considered. From the three matings,420, 422, and 587, there was obtained one perfect single-combedoffspring in each case. All of the other offspring of thesematings had either perfect or intermediate pea combs. Frommatings 419, 421, 424, 428, 429, 443, 445, 461 and 589, therewere recorded one or more combs in each case as nearlv POULTRY NOTES—1909. II3 single or thickened single or single in front and thickenedbehind. In all of these cases the remaining ch
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