. Le bulletin biologique. Biologie ; zoologie ; biologie ; biologie marine. La preuve génétique pour des mâles diploïdes. 443 quarante-cinq, six fois trois fois, quatre fois quatre, deux à cinq reprises, et l'une de sept fois, dans tous les deux cent quatre-vingts re- sulting accouplements dans 23 089 fils, pas de filles. Tableau II. Épreuves de BlPARENTAL les mâles. FormuLie probable de cfd". Source (voir tableau I). Tfcf stérile. Fils d'un compagnon. Rfd1 fertile. Daugh- ters. Sors de Potes. Oo1 I A A 706 o Oo b IAS 18 692 } T IO4 i 760 OoiDd 4145 c o c o^alkubaisi-dd . . D e 2 I 56 72 I o 538 OO' . f 7 6^4 ^ ^7 j -j O OORr II A I I 50 I 21 66 ooRr b 2

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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GENETIC EVIDENCE FOR DIPLOID MALES. 443 forty-five twice, six three times, four four times, two five times, and one seven times, in all two hundred and eighty matings re- sulting in 23, 089 sons, no daughters. TABLE II. TESTS OF BlPARENTAL MALES. Probable FormuLie of cfd". Source (See Table I). Sterile tfcf. Sons of Mates. Fertile rfd1. Daugh- ters. Sors of Mates. Oo1 I a A 706 o Oo b IAS 18 692 } T IO4 i 760 OoiDd c 4 145 o ojo c^o-Dd . . d e 2 I 56 72 I o 5 38 OO' . f 7 6^4 ^ i -i 7 ^O OORr II a I I 50 I 21 66 ooRr b 2 26^ o o'o'Rr c 346 I I 2 S oo'Rr Oo'Rr . III b c i 5 55 137 I 2 6 6 & 160 OoiRr oo'Rr g h i 4 56 323 2 3 25 5 816 296 OoDdWw. . OoDdWw . . OoWW(w)... IV a c e 5 4 3 I.OIO 705 18 o o o Total 197 23, 089 45 186 5-92Q. Of the forty-five fertile males twenty-six were tested once each, seven twice each, four three times, two four times, three five times, one seven times, and two ten times, one hundred and two matings. Altogether these matings gave only 186 daughters among the 5, 929 sons of the females, an average of 3.135 daugh- ters for each fertile biparental male. Seven matings of one male made at two day intervals resulted in 21 daughters, 15 of these in one mating. Another male mated ten times at two-day intervals gave in five matings 21 daughters. These are the most prolific by a rather wide margin. Results indicate that more daughters could be obtained from biparental males by making repeated tests. With two exceptions all biparental males produced daughters showing the dominant characters like themselves. They there- fore breed like haplonts. This was true of the D, O, and R loci irrespective of the side from which the factors came. Although. 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 work.. Marine Biol

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