Inheritance of the Belt in Hampshire Swine

Spillman, W. J.

doi:10.1126/science.25.640.541

Cited by 9 publications

(6 citation statements)

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“…These plants were heterozygous for one pair of genes only. They produced, in F4, the same type of later The only data bearing on this case that I have found are presented by Spillman (1907), and consist of information supplied largely bj^practical swine-breeders.…”

Section: Merino Sheepmentioning

confidence: 83%

An analysis of the effects of selection

Sturtevant¹

1918

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'I am indebted to Mr. J. W. Gowen for much advice and assistance in connection with the statistical treatment of the present problem. He has done a part of the actual calculations, but is not responsible for any arithmetical slips, as I have myself done all the checking. 3 AN ANALYSIS OF THE EFFECT OF SELECTION. The averages, roughly weighted according to number of individuals, are: sepia Dichset, 13; Dichset spineless, 12. This agrees with the data of Bridges on the position of Dichset with reference to pink, since that locus is about 8 to the left of spineless. 12 AN ANALYSIS OF THE EFFECT OF SELECTION. The female was from culture 916, which contained a sepia, spineless, D' kidney, sooty, rough male, and a female-. This female was the offspring of a Dichaet from stock and of a fly from culture 869 [q. v. below, in the pedigrees of 900 and crossbred minus lines). No bristle counts are available from culture 1002, except those of the pau-(6X6) selected to produce culture 1072, the Fi of this hne. After this line had been inbred and selected for 11 generations, a pahof 7-bristled flies were taken from 2389, and their descendants were bred in mass cultures, unselected Dichsets being mated together, for about 2 generations. The hne was then re-established by selecting pairs from this stock and was inbred for 8 generations more. The data and curves for this line are given in table 9 and figure 4.

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Section: Merino Sheepmentioning

confidence: 83%

An analysis of the effects of selection

Sturtevant¹

1918

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“…This case is cited by Castle (19166, p. 215), but no references or authorities are given. The only data bearing on this case that I have found are presented by Spillman (1907), and consist of information supplied largely by practical swine-breeders.…”

Section: Merino Sheepmentioning

confidence: 99%

An analysis of the effects of selection

Sturtevant¹

1918

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“…Pig coat color was the focus of pioneering genetic studies carried out at the beginning of last century [1,2]. In general, while wild boars are relatively uniformly colored, a wide variety of coat colors are found in domestic pigs.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of Coding Genes and Non-Coding RNAs Reveals Complex Regulatory Networks Underlying the Black Back and White Belly Coat Phenotype in Chinese Wuzhishan Pigs

Liu

Chao

et al. 2019

Genes

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Coat color is one of the most important characteristics for distinguishing Chinese indigenous pig breeds. In Wuzhishan pigs, the animals have black on the back and white on the abdomen. However, the molecular genetic basis of this phenotype is unclear. In this study, we used high-throughput RNA sequencing to compare expression profiles of coding and non-coding RNAs from white and black skin samples obtained from individual Wuzhishan pigs. The expression profiling revealed that 194 lncRNAs (long non-coding RNAs), 189 mRNAs (messenger RNAs), and 162 miRNAs (microRNAs) had significantly different levels of expression (|log2 fold change| > 1, p-value < 0.05) in white and black skin. Compared to RNA levels in black skin, white skin had higher levels of expression of 185 lncRNAs, 181 mRNAs, and 23 miRNAs and lower levels of expression of 9 lncRNAs, 8 mRNAs, and 139 miRNAs. Functional analysis suggested that the differentially expressed transcripts are involved in biological processes such as melanin biosynthesis, pigmentation and tyrosine metabolism. Several key genes involved in melanogenesis, including MLANA, PMEL, TYR, TYRP1, DTC, TRPM1 and CAMK2A, had significantly different levels of expression in the two skin tissues. Potential lncRNA–miRNA–gene interactions were also examined. A total of 15 lncRNAs, 11 miRNAs and 7 genes formed 23 lncRNA–miRNA–gene pairs, suggesting that complex regulatory networks of coding and non-coding genes underlie the coat color trait in Wuzhishan pigs. Our study provides a foundation for understanding how lncRNA, miRNA and genes interact to regulate coat color in black-back/white-belly pigs. We also constructed lncRNA–miRNA–gene interaction networks to elucidate the complex molecular mechanisms underlying skin physiology and melanogenesis. The results extend our knowledge about the diversity of coat color among different domestic animals and provide a foundation for studying novel mechanisms that control coat color in Chinese indigenous pigs.

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Inheritance of the Belt in Hampshire Swine

Cited by 9 publications

References 0 publications

An analysis of the effects of selection

An analysis of the effects of selection

An analysis of the effects of selection

Transcriptomic Analysis of Coding Genes and Non-Coding RNAs Reveals Complex Regulatory Networks Underlying the Black Back and White Belly Coat Phenotype in Chinese Wuzhishan Pigs

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