. The book of poultry. Poultry. 66 STANDARD-BRED POULTRY §2 rather advanced subject of Probability belonging to higher algebra must be understood. This algebraic process is used to ascertain the probability that certain characters possessed by plants or animals will reappear in their offspring. To employ this process with certainty requires considerable skill in mathematics. There is, however, a phase of mathematics that is of extreme value to the potdtry fancier, and it has the merit of being very easily used and understood, and it is absolutely exact. It enables the breeder to investigate wi
. The book of poultry. Poultry. 66 STANDARD-BRED POULTRY §2 rather advanced subject of Probability belonging to higher algebra must be understood. This algebraic process is used to ascertain the probability that certain characters possessed by plants or animals will reappear in their offspring. To employ this process with certainty requires considerable skill in mathematics. There is, however, a phase of mathematics that is of extreme value to the potdtry fancier, and it has the merit of being very easily used and understood, and it is absolutely exact. It enables the breeder to investigate with perfect precision the dominant and recessive qualities, as Mendel called them, and to determine whether they are con- stant, or erratic and variable. Questions of the influence of sex, color, shape, size, etc. can be answered so well in no other way. Suppose, for example, that the problem to be solved is the creation of blue-plimiaged fowls by the well-known method of crossing black with white. In the notation to be employed, b^ and h will denote, respectively, a black male and a black female; w^ and Wi will denote a white male and a white female. When a black male is mated with a white female, the cross will be b^ Wi; the reverse of this will be &i viA. If two such crosses are mated, the result will be 6t Wi. Such an expres- sion as 6f wi would denote a fowl whose qualities of every (2)b^ w' (3) 6' M?,. b,w^ * 6'«D, (Dbzw"" (3) b\ w\ (2) b\ w\ (4^)b^W2. 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 McGrew, Thomas Fletcher, 1850-1930. New York, The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1921
