Inbreeding and Recombination
نویسندگان
چکیده
منابع مشابه
Inbreeding and Recombination.
A very rapid decrease in heterozygosis is naturally indicated in the formative period of the breed (studied in Shorthorn cattle7'8). But even after large numbers are reached the average rate of decrease per generation in 6 breeds including cattle,8"l0 horses,9 sheep'0 and swine'0 is about 0.5%, equivalent to 25 as the effective number of sires per generation. It is probably also true in nature ...
متن کاملChanges in recombination frequency following inbreeding in Schizophyllum.
NBREEDING has been shown to affect several linkage relationships in NeuroI spora (STADLER and TOWE 19.62, TOWE and STADLER 1964, LAVIGNE and FROST 1964, CAMERON, Hsu and PERKINS 1966, NAKAMURA 1966). These changes in frequencies of recombination can be regarded as manifestations of the genetic control of the crossing-over process; alternatively, they can result from structural changes which inc...
متن کاملInbreeding and Inbreeding Depression on Body Weight in Iranian Shal Sheep
The aim of this study was to estimate amount of inbreeding coefficient in Shal sheep and its impact on growth performance. Pedigree information and body weight at different ages (birth weight, 3 month weight, 6 month weight, 9 month weight and 12 month weight) were used from 6692 lambs from 90 rams and 1007 ewes. Data were collected on Ghazvin sheep breeding station during 1997-2013. Estimation...
متن کاملHigh inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China
As highly prized, popular mushrooms, morels are widely distributed in the northern hemisphere, with China as a modern centre of speciation and diversity. Overharvesting of morels has caused concern over how to effectively preserve their biological and genetic diversity. However, little is known about their population biology and life cycle. In this study, we selected two sympatric phylogenetic ...
متن کاملEffect of Including Inbreeding, Heterosis and Recombination Loss in Prediction of Breeding Values for Fertility Traits
Inbreeding results from the mating of related individuals and is becoming increasingly important in domestic livestock populations. Inbreeding depression is the reduction of the mean phenotypic value, particularly for traits connected with reproduction or fitness (Miglior et al., 1992). Inbreeding depression has been shown to decrease milk production by approximately 9-26 kg of milk per lactati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1933
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.19.4.420