Search

Your search keyword '"Carmi, Shai"' showing total 7 results
Start Over Author "Carmi, Shai" Language undetermined
7 results on '"Carmi, Shai"'

1. A note on the distribution of admixture segment lengths and ancestry proportions under pulse and two-wave admixture models

Author

Carmi, Shai, Xue, James, and Pe'er, Itsik

Subjects
FOS: Biological sciences, Populations and Evolution (q-bio.PE), Quantitative Biology - Populations and Evolution
Abstract

Admixed populations are formed by the merging of two or more ancestral populations, and the ancestry of each locus in an admixed genome derives from either source. Consider a simple "pulse" admixture model, where populations A and B merged t generations ago without subsequent gene flow. We derive the distribution of the proportion of an admixed chromosome that has A (or B) ancestry, as a function of the chromosome length L, t, and the initial contribution of the A source, m. We demonstrate that these results can be used for inference of the admixture parameters. For more complex admixture models, we derive an expression in Laplace space for the distribution of ancestry proportions that depends on having the distribution of the lengths of segments of each ancestry. We obtain explicit results for the special case of a "two-wave" admixture model, where population A contributed additional migrants in one of the generations between the present and the initial admixture event. Specifically, we derive formulas for the distribution of A and B segment lengths and numerical results for the distribution of ancestry proportions. We show that for recent admixture, data generated under a two-wave model can hardly be distinguished from that generated under a pulse model., Comment: 12 pages, 3 figures

Published
2015
Full Text
View/download PDF

2. From non-Brownian Functionals to a Fractional Schr��dinger Equation

Author

Turgeman, Lior, Carmi, Shai, and Barkai, Eli

Subjects
Statistical Mechanics (cond-mat.stat-mech), FOS: Physical sciences
Abstract

We derive backward and forward fractional Schr��dinger type of equations for the distribution of functionals of the path of a particle undergoing anomalous diffusion. Fractional substantial derivatives introduced by Friedrich and co-workers [PRL {\bf 96}, 230601 (2006)] provide the correct fractional framework for the problem at hand. In the limit of normal diffusion we recover the Feynman-Kac treatment of Brownian functionals. For applications, we calculate the distribution of occupation times in half space and show how statistics of anomalous functionals is related to weak ergodicity breaking., 5 pages

Published
2009
Full Text
View/download PDF

3. Search in Complex Networks : a New Method of Naming

Author

Carmi, Shai, Cohen, Reuven, and Dolev, Danny

Subjects
Computer Science - Networking and Internet Architecture, Networking and Internet Architecture (cs.NI), FOS: Computer and information sciences, FOS: Physical sciences, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks
Abstract

We suggest a method for routing when the source does not posses full information about the shortest path to the destination. The method is particularly useful for scale-free networks, and exploits its unique characteristics. By assigning new (short) names to nodes (aka labelling) we are able to reduce significantly the memory requirement at the routers, yet we succeed in routing with high probability through paths very close in distance to the shortest ones., Comment: 5 pages, 4 figures

Published
2006
Full Text
View/download PDF

4. Transport of multiple users in complex networks

Author

Carmi, Shai, Wu, Zhenhua, López, Eduardo, Havlin, Shlomo, and Stanley, H. Eugene

Subjects
FOS: Physical sciences, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks
Abstract

We study the transport properties of model networks such as scale-free and Erd\H{o}s-R\'{e}nyi networks as well as a real network. We consider the conductance $G$ between two arbitrarily chosen nodes where each link has the same unit resistance. Our theoretical analysis for scale-free networks predicts a broad range of values of $G$, with a power-law tail distribution $\Phi_{\rm SF}(G)\sim G^{-g_G}$, where $g_G=2\lambda -1$, and $\lambda$ is the decay exponent for the scale-free network degree distribution. We confirm our predictions by large scale simulations. The power-law tail in $\Phi_{\rm SF}(G)$ leads to large values of $G$, thereby significantly improving the transport in scale-free networks, compared to Erd\H{o}s-R\'{e}nyi networks where the tail of the conductivity distribution decays exponentially. We develop a simple physical picture of the transport to account for the results. We study another model for transport, the \emph{max-flow} model, where conductance is defined as the number of link-independent paths between the two nodes, and find that a similar picture holds. The effects of distance on the value of conductance are considered for both models, and some differences emerge. We then extend our study to the case of multiple sources, where the transport is define between two \emph{groups} of nodes. We find a fundamental difference between the two forms of flow when considering the quality of the transport with respect to the number of sources, and find an optimal number of sources, or users, for the max-flow case. A qualitative (and partially quantitative) explanation is also given.

Published
2006
Full Text
View/download PDF

5. Associations of autozygosity with a broad range of human phenotypes

Author

Clark, David W, Okada, Yukinori, Moore, Kristjan HS, Mason, Dan, Pirastu, Nicola, Gandin, Ilaria, Mattsson, Hannele, Barnes, Catriona LK, Lin, Kuang, Zhao, Jing Hua, Deelen, Patrick, Rohde, Rebecca, Schurmann, Claudia, Guo, Xiuqing, Giulianini, Franco, Zhang, Weihua, Medina-Gomez, Carolina, Karlsson, Robert, Bao, Yanchun, Bartz, Traci M, Baumbach, Clemens, Biino, Ginevra, Bixley, Matthew J, Brumat, Marco, Chai, Jin-Fang, Corre, Tanguy, Cousminer, Diana L, Dekker, Annelot M, Eccles, David A, Van Eijk, Kristel R, Fuchsberger, Christian, Gao, He, Germain, Marine, Gordon, Scott D, De Haan, Hugoline G, Harris, Sarah E, Hofer, Edith, Huerta-Chagoya, Alicia, Igartua, Catherine, Jansen, Iris E, Jia, Yucheng, Kacprowski, Tim, Karlsson, Torgny, Kleber, Marcus E, Li, Shengchao Alfred, Li-Gao, Ruifang, Mahajan, Anubha, Matsuda, Koichi, Meidtner, Karina, Meng, Weihua, Montasser, May E, Van Der Most, Peter J, Munz, Matthias, Nutile, Teresa, Palviainen, Teemu, Prasad, Gauri, Prasad, Rashmi B, Priyanka, Tallapragada Divya Sri, Rizzi, Federica, Salvi, Erika, Sapkota, Bishwa R, Shriner, Daniel, Skotte, Line, Smart, Melissa C, Smith, Albert Vernon, Van Der Spek, Ashley, Spracklen, Cassandra N, Strawbridge, Rona J, Tajuddin, Salman M, Trompet, Stella, Turman, Constance, Verweij, Niek, Viberti, Clara, Wang, Lihua, Warren, Helen R, Wootton, Robyn E, Yanek, Lisa R, Yao, Jie, Yousri, Noha A, Zhao, Wei, Adeyemo, Adebowale A, Afaq, Saima, Aguilar-Salinas, Carlos Alberto, Akiyama, Masato, Albert, Matthew L, Allison, Matthew A, Alver, Maris, Aung, Tin, Azizi, Fereidoun, Bentley, Amy R, Boeing, Heiner, Boerwinkle, Eric, Borja, Judith B, De Borst, Gert J, Bottinger, Erwin P, Broer, Linda, Campbell, Harry, Chanock, Stephen, Chee, Miao-Li, Chen, Guanjie, Chen, Yii-Der I, Chen, Zhengming, Chiu, Yen-Feng, Cocca, Massimiliano, Collins, Francis S, Concas, Maria Pina, Corley, Janie, Cugliari, Giovanni, Van Dam, Rob M, Damulina, Anna, Daneshpour, Maryam S, Day, Felix R, Delgado, Graciela E, Dhana, Klodian, Doney, Alexander SF, Dörr, Marcus, Doumatey, Ayo P, Dzimiri, Nduna, Ebenesersdóttir, S Sunna, Elliott, Joshua, Elliott, Paul, Ewert, Ralf, Felix, Janine F, Fischer, Krista, Freedman, Barry I, Girotto, Giorgia, Goel, Anuj, Gögele, Martin, Goodarzi, Mark O, Graff, Mariaelisa, Granot-Hershkovitz, Einat, Grodstein, Francine, Guarrera, Simonetta, Gudbjartsson, Daniel F, Guity, Kamran, Gunnarsson, Bjarni, Guo, Yu, Hagenaars, Saskia P, Haiman, Christopher A, Halevy, Avner, Harris, Tamara B, Hedayati, Mehdi, Van Heel, David A, Hirata, Makoto, Höfer, Imo, Hsiung, Chao Agnes, Huang, Jinyan, Hung, Yi-Jen, Ikram, M Arfan, Jagadeesan, Anuradha, Jousilahti, Pekka, Kamatani, Yoichiro, Kanai, Masahiro, Kerrison, Nicola D, Kessler, Thorsten, Khaw, Kay-Tee, Khor, Chiea Chuen, De Kleijn, Dominique PV, Koh, Woon-Puay, Kolcic, Ivana, Kraft, Peter, Krämer, Bernhard K, Kutalik, Zoltán, Kuusisto, Johanna, Langenberg, Claudia, Launer, Lenore J, Lawlor, Deborah A, Lee, I-Te, Lee, Wen-Jane, Lerch, Markus M, Li, Liming, Liu, Jianjun, Loh, Marie, London, Stephanie J, Loomis, Stephanie, Lu, Yingchang, Luan, Jian'an, Mägi, Reedik, Manichaikul, Ani W, Manunta, Paolo, Másson, Gísli, Matoba, Nana, Mei, Xue W, Meisinger, Christa, Meitinger, Thomas, Mezzavilla, Massimo, Milani, Lili, Millwood, Iona Y, Momozawa, Yukihide, Moore, Amy, Morange, Pierre-Emmanuel, Moreno-Macías, Hortensia, Mori, Trevor A, Morrison, Alanna C, Muka, Taulant, Murakami, Yoshinori, Murray, Alison D, De Mutsert, Renée, Mychaleckyj, Josyf C, Nalls, Mike A, Nauck, Matthias, Neville, Matt J, Nolte, Ilja M, Ong, Ken K, Orozco, Lorena, Padmanabhan, Sandosh, Pálsson, Gunnar, Pankow, James S, Pattaro, Cristian, Pattie, Alison, Polasek, Ozren, Poulter, Neil, Pramstaller, Peter P, Quintana-Murci, Lluis, Räikkönen, Katri, Ralhan, Sarju, Rao, Dabeeru C, Van Rheenen, Wouter, Rich, Stephen S, Ridker, Paul M, Rietveld, Cornelius A, Robino, Antonietta, Van Rooij, Frank JA, Ruggiero, Daniela, Saba, Yasaman, Sabanayagam, Charumathi, Sabater-Lleal, Maria, Sala, Cinzia Felicita, Salomaa, Veikko, Sandow, Kevin, Schmidt, Helena, Scott, Laura J, Scott, William R, Sedaghati-Khayat, Bahareh, Sennblad, Bengt, Van Setten, Jessica, Sever, Peter J, Sheu, Wayne H-H, Shi, Yuan, Shrestha, Smeeta, Shukla, Sharvari Rahul, Sigurdsson, Jon K, Sikka, Timo Tonis, Singh, Jai Rup, Smith, Blair H, Stančáková, Alena, Stanton, Alice, Starr, John M, Stefansdottir, Lilja, Straker, Leon, Sulem, Patrick, Sveinbjornsson, Gardar, Swertz, Morris A, Taylor, Adele M, Taylor, Kent D, Terzikhan, Natalie, Tham, Yih-Chung, Thorleifsson, Gudmar, Thorsteinsdottir, Unnur, Tillander, Annika, Tracy, Russell P, Tusié-Luna, Teresa, Tzoulaki, Ioanna, Vaccargiu, Simona, Vangipurapu, Jagadish, Veldink, Jan H, Vitart, Veronique, Völker, Uwe, Vuoksimaa, Eero, Wakil, Salma M, Waldenberger, Melanie, Wander, Gurpreet S, Wang, Ya Xing, Wareham, Nicholas J, Wild, Sarah, Yajnik, Chittaranjan S, Yuan, Jian-Min, Zeng, Lingyao, Zhang, Liang, Zhou, Jie, Amin, Najaf, Asselbergs, Folkert W, Bakker, Stephan JL, Becker, Diane M, Lehne, Benjamin, Bennett, David A, Van Den Berg, Leonard H, Berndt, Sonja I, Bharadwaj, Dwaipayan, Bielak, Lawrence F, Bochud, Murielle, Boehnke, Mike, Bouchard, Claude, Bradfield, Jonathan P, Brody, Jennifer A, Campbell, Archie, Carmi, Shai, Caulfield, Mark J, Cesarini, David, Chambers, John C, Chandak, Giriraj Ratan, Cheng, Ching-Yu, Ciullo, Marina, Cornelis, Marilyn, Cusi, Daniele, Smith, George Davey, Deary, Ian J, Dorajoo, Rajkumar, Van Duijn, Cornelia M, Ellinghaus, David, Erdmann, Jeanette, Eriksson, Johan G, Evangelou, Evangelos, Evans, Michele K, Faul, Jessica D, Feenstra, Bjarke, Feitosa, Mary, Foisy, Sylvain, Franke, Andre, Friedlander, Yechiel, Gasparini, Paolo, Gieger, Christian, Gonzalez, Clicerio, Goyette, Philippe, Grant, Struan FA, Griffiths, Lyn R, Groop, Leif, Gudnason, Vilmundur, Gyllensten, Ulf, Hakonarson, Hakon, Hamsten, Anders, Van Der Harst, Pim, Heng, Chew-Kiat, Hicks, Andrew A, Hochner, Hagit, Huikuri, Heikki, Hunt, Steven C, Jaddoe, Vincent WV, De Jager, Philip L, Johannesson, Magnus, Johansson, Åsa, Jonas, Jost B, Jukema, J Wouter, Junttila, Juhani, Kaprio, Jaakko, Kardia, Sharon LR, Karpe, Fredrik, Kumari, Meena, Laakso, Markku, Van Der Laan, Sander W, Lahti, Jari, Laudes, Matthias, Lea, Rodney A, Lieb, Wolfgang, Lumley, Thomas, Martin, Nicholas G, März, Winfried, Matullo, Giuseppe, McCarthy, Mark I, Medland, Sarah E, Merriman, Tony R, Metspalu, Andres, Meyer, Brian F, Mohlke, Karen L, Montgomery, Grant W, Mook-Kanamori, Dennis, Munroe, Patricia B, North, Kari E, Nyholt, Dale R, O'connell, Jeffery R, Ober, Carole, Oldehinkel, Albertine J, Palmas, Walter, Palmer, Colin, Pasterkamp, Gerard G, Patin, Etienne, Pennell, Craig E, Perusse, Louis, Peyser, Patricia A, Pirastu, Mario, Polderman, Tinca JC, Porteous, David J, Posthuma, Danielle, Psaty, Bruce M, Rioux, John D, Rivadeneira, Fernando, Rotimi, Charles, Rotter, Jerome I, Rudan, Igor, Den Ruijter, Hester M, Sanghera, Dharambir K, Sattar, Naveed, Schmidt, Reinhold, Schulze, Matthias B, Schunkert, Heribert, Scott, Robert A, Shuldiner, Alan R, Sim, Xueling, Small, Neil, Smith, Jennifer A, Sotoodehnia, Nona, Tai, E-Shyong, Teumer, Alexander, Timpson, Nicholas J, Toniolo, Daniela, Tregouet, David-Alexandre, Tuomi, Tiinamaija, Vollenweider, Peter, Wang, Carol A, Weir, David R, Whitfield, John B, Wijmenga, Cisca, Wong, Tien-Yin, Wright, John, Yang, Jingyun, Yu, Lei, Zemel, Babette S, Zonderman, Alan B, Perola, Markus, Magnusson, Patrik KE, Uitterlinden, André G, Kooner, Jaspal S, Chasman, Daniel I, Loos, Ruth JF, Franceschini, Nora, Franke, Lude, Haley, Chris S, Hayward, Caroline, Walters, Robin G, Perry, John RB, Esko, Tōnu, Helgason, Agnar, Stefansson, Kari, Joshi, Peter K, Kubo, Michiaki, and Wilson, James F

Subjects
Consanguinity, Cognition, Fertility, Inbreeding Depression, Risk-Taking, Haplotypes, Health Status, Homozygote, Body Size, Humans, Alleles, 3. Good health
Abstract

In many species, the offspring of related parents suffer reduced reproductive success, a phenomenon known as inbreeding depression. In humans, the importance of this effect has remained unclear, partly because reproduction between close relatives is both rare and frequently associated with confounding social factors. Here, using genomic inbreeding coefficients (FROH) for >1.4 million individuals, we show that FROH is significantly associated (p < 0.0005) with apparently deleterious changes in 32 out of 100 traits analysed. These changes are associated with runs of homozygosity (ROH), but not with common variant homozygosity, suggesting that genetic variants associated with inbreeding depression are predominantly rare. The effect on fertility is striking: FROH equivalent to the offspring of first cousins is associated with a 55% decrease [95% CI 44-66%] in the odds of having children. Finally, the effects of FROH are confirmed within full-sibling pairs, where the variation in FROH is independent of all environmental confounding.

6. Associations of autozygosity with a broad range of human phenotypes

Author

Clark, David W, Okada, Yukinori, Moore, Kristjan H S, Mason, Dan, Pirastu, Nicola, Gandin, Ilaria, Mattsson, Hannele, Barnes, Catriona L K, Lin, Kuang, Zhao, Jing Hua, Deelen, Patrick, Rohde, Rebecca, Schurmann, Claudia, Guo, Xiuqing, Giulianini, Franco, Zhang, Weihua, Medina-Gomez, Carolina, Karlsson, Robert, Bao, Yanchun, Bartz, Traci M, Baumbach, Clemens, Biino, Ginevra, Bixley, Matthew J, Brumat, Marco, Chai, Jin-Fang, Corre, Tanguy, Cousminer, Diana L, Dekker, Annelot M, Eccles, David A, Van Eijk, Kristel R, Fuchsberger, Christian, Gao, He, Germain, Marine, Gordon, Scott D, De Haan, Hugoline G, Harris, Sarah E, Hofer, Edith, Huerta-Chagoya, Alicia, Igartua, Catherine, Jansen, Iris E, Jia, Yucheng, Kacprowski, Tim, Karlsson, Torgny, Kleber, Marcus E, Li, Shengchao Alfred, Li-Gao, Ruifang, Mahajan, Anubha, Matsuda, Koichi, Meidtner, Karina, Meng, Weihua, Montasser, May E, Van Der Most, Peter J, Munz, Matthias, Nutile, Teresa, Palviainen, Teemu, Prasad, Gauri, Prasad, Rashmi B, Priyanka, Tallapragada Divya Sri, Rizzi, Federica, Salvi, Erika, Sapkota, Bishwa R, Shriner, Daniel, Skotte, Line, Smart, Melissa C, Smith, Albert Vernon, Van Der Spek, Ashley, Spracklen, Cassandra N, Strawbridge, Rona J, Tajuddin, Salman M, Trompet, Stella, Turman, Constance, Verweij, Niek, Viberti, Clara, Wang, Lihua, Warren, Helen R, Wootton, Robyn E, Yanek, Lisa R, Yao, Jie, Yousri, Noha A, Zhao, Wei, Adeyemo, Adebowale A, Afaq, Saima, Aguilar-Salinas, Carlos Alberto, Akiyama, Masato, Albert, Matthew L, Allison, Matthew A, Alver, Maris, Aung, Tin, Azizi, Fereidoun, Bentley, Amy R, Boeing, Heiner, Boerwinkle, Eric, Borja, Judith B, De Borst, Gert J, Bottinger, Erwin P, Broer, Linda, Campbell, Harry, Chanock, Stephen, Chee, Miao-Li, Chen, Guanjie, Chen, Yii-Der I, Chen, Zhengming, Chiu, Yen-Feng, Cocca, Massimiliano, Collins, Francis S, Concas, Maria Pina, Corley, Janie, Cugliari, Giovanni, Van Dam, Rob M, Damulina, Anna, Daneshpour, Maryam S, Day, Felix R, Delgado, Graciela E, Dhana, Klodian, Doney, Alexander S F, Dörr, Marcus, Doumatey, Ayo P, Dzimiri, Nduna, Ebenesersdóttir, S Sunna, Elliott, Joshua, Elliott, Paul, Ewert, Ralf, Felix, Janine F, Fischer, Krista, Freedman, Barry I, Girotto, Giorgia, Goel, Anuj, Gögele, Martin, Goodarzi, Mark O, Graff, Mariaelisa, Granot-Hershkovitz, Einat, Grodstein, Francine, Guarrera, Simonetta, Gudbjartsson, Daniel F, Guity, Kamran, Gunnarsson, Bjarni, Guo, Yu, Hagenaars, Saskia P, Haiman, Christopher A, Halevy, Avner, Harris, Tamara B, Hedayati, Mehdi, Van Heel, David A, Hirata, Makoto, Höfer, Imo, Hsiung, Chao Agnes, Huang, Jinyan, Hung, Yi-Jen, Ikram, M Arfan, Jagadeesan, Anuradha, Jousilahti, Pekka, Kamatani, Yoichiro, Kanai, Masahiro, Kerrison, Nicola D, Kessler, Thorsten, Khaw, Kay-Tee, Khor, Chiea Chuen, De Kleijn, Dominique P V, Koh, Woon-Puay, Kolcic, Ivana, Kraft, Peter, Krämer, Bernhard K, Kutalik, Zoltán, Kuusisto, Johanna, Langenberg, Claudia, Launer, Lenore J, Lawlor, Deborah A, Lee, I-Te, Lee, Wen-Jane, Lerch, Markus M, Li, Liming, Liu, Jianjun, Loh, Marie, London, Stephanie J, Loomis, Stephanie, Lu, Yingchang, Luan, Jian’an, Mägi, Reedik, Manichaikul, Ani W, Manunta, Paolo, Másson, Gísli, Matoba, Nana, Mei, Xue W, Meisinger, Christa, Meitinger, Thomas, Mezzavilla, Massimo, Milani, Lili, Millwood, Iona Y, Momozawa, Yukihide, Moore, Amy, Morange, Pierre-Emmanuel, Moreno-Macías, Hortensia, Mori, Trevor A, Morrison, Alanna C, Muka, Taulant, Murakami, Yoshinori, Murray, Alison D, De Mutsert, Renée, Mychaleckyj, Josyf C, Nalls, Mike A, Nauck, Matthias, Neville, Matt J, Nolte, Ilja M, Ong, Ken K, Orozco, Lorena, Padmanabhan, Sandosh, Pálsson, Gunnar, Pankow, James S, Pattaro, Cristian, Pattie, Alison, Polasek, Ozren, Poulter, Neil, Pramstaller, Peter P, Quintana-Murci, Lluis, Räikkönen, Katri, Ralhan, Sarju, Rao, Dabeeru C, Van Rheenen, Wouter, Rich, Stephen S, Ridker, Paul M, Rietveld, Cornelius A, Robino, Antonietta, Van Rooij, Frank J A, Ruggiero, Daniela, Saba, Yasaman, Sabanayagam, Charumathi, Sabater-Lleal, Maria, Sala, Cinzia Felicita, Salomaa, Veikko, Sandow, Kevin, Schmidt, Helena, Scott, Laura J, Scott, William R, Sedaghati-Khayat, Bahareh, Sennblad, Bengt, Van Setten, Jessica, Sever, Peter J, Sheu, Wayne H-H, Shi, Yuan, Shrestha, Smeeta, Shukla, Sharvari Rahul, Sigurdsson, Jon K, Sikka, Timo Tonis, Singh, Jai Rup, Smith, Blair H, Stančáková, Alena, Stanton, Alice, Starr, John M, Stefansdottir, Lilja, Straker, Leon, Sulem, Patrick, Sveinbjornsson, Gardar, Swertz, Morris A, Taylor, Adele M, Taylor, Kent D, Terzikhan, Natalie, Tham, Yih-Chung, Thorleifsson, Gudmar, Thorsteinsdottir, Unnur, Tillander, Annika, Tracy, Russell P, Tusié-Luna, Teresa, Tzoulaki, Ioanna, Vaccargiu, Simona, Vangipurapu, Jagadish, Veldink, Jan H, Vitart, Veronique, Völker, Uwe, Vuoksimaa, Eero, Wakil, Salma M, Waldenberger, Melanie, Wander, Gurpreet S, Wang, Ya Xing, Wareham, Nicholas J, Wild, Sarah, Yajnik, Chittaranjan S, Yuan, Jian-Min, Zeng, Lingyao, Zhang, Liang, Zhou, Jie, Amin, Najaf, Asselbergs, Folkert W, Bakker, Stephan J L, Becker, Diane M, Lehne, Benjamin, Bennett, David A, Van Den Berg, Leonard H, Berndt, Sonja I, Bharadwaj, Dwaipayan, Bielak, Lawrence F, Bochud, Murielle, Boehnke, Mike, Bouchard, Claude, Bradfield, Jonathan P, Brody, Jennifer A, Campbell, Archie, Carmi, Shai, Caulfield, Mark J, Cesarini, David, Chambers, John C, Chandak, Giriraj Ratan, Cheng, Ching-Yu, Ciullo, Marina, Cornelis, Marilyn, Cusi, Daniele, Smith, George Davey, Deary, Ian J, Dorajoo, Rajkumar, Van Duijn, Cornelia M, Ellinghaus, David, Erdmann, Jeanette, Eriksson, Johan G, Evangelou, Evangelos, Evans, Michele K, Faul, Jessica D, Feenstra, Bjarke, Feitosa, Mary, Foisy, Sylvain, Franke, Andre, Friedlander, Yechiel, Gasparini, Paolo, Gieger, Christian, Gonzalez, Clicerio, Goyette, Philippe, Grant, Struan F A, Griffiths, Lyn R, Groop, Leif, Gudnason, Vilmundur, Gyllensten, Ulf, Hakonarson, Hakon, Hamsten, Anders, Van Der Harst, Pim, Heng, Chew-Kiat, Hicks, Andrew A, Hochner, Hagit, Huikuri, Heikki, Hunt, Steven C, Jaddoe, Vincent W V, De Jager, Philip L, Johannesson, Magnus, Johansson, Åsa, Jonas, Jost B, Jukema, J Wouter, Junttila, Juhani, Kaprio, Jaakko, Kardia, Sharon L. R., Karpe, Fredrik, Kumari, Meena, Laakso, Markku, Van Der Laan, Sander W, Lahti, Jari, Laudes, Matthias, Lea, Rodney A, Lieb, Wolfgang, Lumley, Thomas, Martin, Nicholas G, März, Winfried, Matullo, Giuseppe, McCarthy, Mark I, Medland, Sarah E, Merriman, Tony R, Metspalu, Andres, Meyer, Brian F, Mohlke, Karen L, Montgomery, Grant W, Mook-Kanamori, Dennis, Munroe, Patricia B, North, Kari E, Nyholt, Dale R, O’connell, Jeffery R, Ober, Carole, Oldehinkel, Albertine J, Palmas, Walter, Palmer, Colin, Pasterkamp, Gerard G, Patin, Etienne, Pennell, Craig E, Perusse, Louis, Peyser, Patricia A, Pirastu, Mario, Polderman, Tinca J. C., Porteous, David J, Posthuma, Danielle, Psaty, Bruce M, Rioux, John D, Rivadeneira, Fernando, Rotimi, Charles, Rotter, Jerome I, Rudan, Igor, Den Ruijter, Hester M, Sanghera, Dharambir K, Sattar, Naveed, Schmidt, Reinhold, Schulze, Matthias B, Schunkert, Heribert, Scott, Robert A, Shuldiner, Alan R, Sim, Xueling, Small, Neil, Smith, Jennifer A, Sotoodehnia, Nona, Tai, E-Shyong, Teumer, Alexander, Timpson, Nicholas J, Toniolo, Daniela, Tregouet, David-Alexandre, Tuomi, Tiinamaija, Vollenweider, Peter, Wang, Carol A, Weir, David R, Whitfield, John B, Wijmenga, Cisca, Wong, Tien-Yin, Wright, John, Yang, Jingyun, Yu, Lei, Zemel, Babette S, Zonderman, Alan B, Perola, Markus, Magnusson, Patrik K. E., Uitterlinden, André G, Kooner, Jaspal S, Chasman, Daniel I, Loos, Ruth J. F., Franceschini, Nora, Franke, Lude, Haley, Chris S, Hayward, Caroline, Walters, Robin G, Perry, John R. B., Esko, Tōnu, Helgason, Agnar, Stefansson, Kari, Joshi, Peter K, Kubo, Michiaki, and Wilson, James F

Subjects
631/208/1397, 631/208/730, article, 631/208/205, 631/208/721, 3. Good health
Abstract

In many species, the offspring of related parents suffer reduced reproductive success, a phenomenon known as inbreeding depression. In humans, the importance of this effect has remained unclear, partly because reproduction between close relatives is both rare and frequently associated with confounding social factors. Here, using genomic inbreeding coefficients (FROH) for >1.4 million individuals, we show that FROH is significantly associated (p < 0.0005) with apparently deleterious changes in 32 out of 100 traits analysed. These changes are associated with runs of homozygosity (ROH), but not with common variant homozygosity, suggesting that genetic variants associated with inbreeding depression are predominantly rare. The effect on fertility is striking: FROH equivalent to the offspring of first cousins is associated with a 55% decrease [95% CI 44–66%] in the odds of having children. Finally, the effects of FROH are confirmed within full-sibling pairs, where the variation in FROH is independent of all environmental confounding.

7. The time and place of European admixture in Ashkenazi Jewish history

Author

Xue, James, Lencz, Todd, Darvasi, Ariel, Pe'er, Itsik, and Carmi, Shai

Subjects
Historical geography, Population genetics, FOS: Biological sciences, Genetics, 10. No inequality, Ashkenazim, Gene flow
Abstract

The Ashkenazi Jewish (AJ) population is important in genetics due to its high rate of Mendelian disorders. AJ appeared in Europe in the 10th century, and their ancestry is thought to comprise European (EU) and Middle-Eastern (ME) components. However, both the time and place of admixture are subject to debate. Here, we attempt to characterize the AJ admixture history using a careful application of new and existing methods on a large AJ sample. Our main approach was based on local ancestry inference, in which we first classified each AJ genomic segment as EU or ME, and then compared allele frequencies along the EU segments to those of different EU populations. The contribution of each EU source was also estimated using GLOBETROTTER and haplotype sharing. The time of admixture was inferred based on multiple statistics, including ME segment lengths, the total EU ancestry per chromosome, and the correlation of ancestries along the chromosome. The major source of EU ancestry in AJ was found to be Southern Europe (≈60–80% of EU ancestry), with the rest being likely Eastern European. The inferred admixture time was ≈30 generations ago, but multiple lines of evidence suggest that it represents an average over two or more events, pre- and post-dating the founder event experienced by AJ in late medieval times. The time of the pre-bottleneck admixture event, which was likely Southern European, was estimated to ≈25–50 generations ago.

Catalog

Books, media, physical & digital resources
See catalog results