. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 191.—EcsiiUs of erossing White Plymouth Rock and White Leghorn. A, Pid', White Leghorn; C, Pi 9 , White Plymouth Rock; B, FicT, showing a little flecking of black and a barred tail feather; D,Fi<^ , type of barred birds obtained in Fi. (After Hadley.) The most important kind of Mendelian work is that which leads to some definite anal3rsis of the factor complex characteristic of a given breed. As an illustration of such investigations we have Hadlej^'s analysis of the genetic constitution of
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. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 191.—EcsiiUs of erossing White Plymouth Rock and White Leghorn. A, Pid', White Leghorn; C, Pi 9 , White Plymouth Rock; B, FicT, showing a little flecking of black and a barred tail feather; D, Fi<^ , type of barred birds obtained in Fi. (After Hadley.) The most important kind of Mendelian work is that which leads to some definite anal3rsis of the factor complex characteristic of a given breed. As an illustration of such investigations we have Hadlej^'s analysis of the genetic constitution of the White Leghorn breed. White is often dominant in fowls, so that white breeds may carry latent color and pattern factors in their makeup. Hadley finds the ^Yh.ite Leghorn to be of the genetic constitution CCII{BZ)(BZ), if a male, and CCII {BZ)W, if a female, the factors having the following effects: Digitized by Microsoft®. 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.. Babcock, E. B. (Ernest Brown), b. 1877; Clausen, Roy Elwood, 1891-. New York, McGraw-Hill; [etc. , etc. ]