. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. 408 (SENETICH IN RELATION TO ACTIICIJLTURE This completes the formulation, so far as our present knowledge goes, for the series of colors, usually met with among horses, but there are a few others more rare and less in favor, the position of which from a genetic standpoint is almost wholly speculative. There appears to be, however, a dominant dilution factor, /, which acts upon all the color factors. According to Wentworth black with this factor becomes mouse colored, bay becomes dun of the particu
. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. 408 (SENETICH IN RELATION TO ACTIICIJLTURE This completes the formulation, so far as our present knowledge goes, for the series of colors, usually met with among horses, but there are a few others more rare and less in favor, the position of which from a genetic standpoint is almost wholly speculative. There appears to be, however, a dominant dilution factor, /, which acts upon all the color factors. According to Wentworth black with this factor becomes mouse colored, bay becomes dun of the particular shade known as buckskin, chestnut becomes yellowish dun, and sorrel with lighter mane and tail becomes cream colored with lighter mane and tail. The evidence, however, is by no means extensive enough to be conclusive and should receive. F:g. 186.—The skewbald Iceland pony, Tundra, her skewbald filly, Circus Girl, by a bay Shetland pony, and her hybrid foal, Sir John, by the Burchell zebra, Matopo. {After Ewari.) experimental verification. There seems, also, to be a white which is distinct from the faded gray of old horses. This white is dominant to any color. Castle considers it an extreme extension toward white of the spotted condition. The tj'pes of spotting are mostljr dominant over uniform coloration, and often the pattern is very faithfully reproduced. This statement applies to stars, blazes, skewbald markings, calico types of pattern, and other kinds of white spotting of the same general type. Fig. 186 shows a case of accurate reproduction of skewbald marldngs by the offspring of an Iceland pony when bred to a bay Shetland pony stallion. Tundra had previously produced a dun foal to the service of a stallion of unknown coat color, and subsequently she produced another skewbald foal. Her zebra hybrid foal, however, was of a dun color, Digitized by Microsoft®. Please note that these images are extracted from scanned page images that may have been digitally enhanced fo
Size: 1942px × 1287px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksu, booksubjectplantbreeding
