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. 



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 



