نتایج جستجو برای: genetic groups

تعداد نتایج: 1308048  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - پژوهشکده علوم انسانی و اجتماعی 1390

this study attempts to investigate the effect of peers’ revision in comparison to that of the teacher, and whether peers’ comments and teachers’ comments facilitate students’ revision? if yes, which one is more effective? also attempts have been made to see which aspects of language are more highlighted by peers versus teachers when commenting. besides, it is investigating the student’s attitud...

Journal: :applied biotechnology reports 0
fahimeh mohamadi suni mohammad farkhari agriculture and natural resources university of khouzestan henghameh taheri payam pour mohammadi mohammad barzegari

since crosses of lines with suitable genetic distance produce excellent hybrids, the identification of genetic diversity between zea mays l. inbred lines in hybrid maize breeding programs has a high priority. a total of 27 inbred lines plus b73 and mo17 (sc704 parents) were evaluated by 15 inter-simple sequence repeat (issr) primers. inbreds were selected randomly from inbred lines from the agr...

Journal: :applied biotechnology reports 0
fahimeh mohamadi suni mohammad farkhari agriculture and natural resources university of khouzestan henghameh taheri payam pour mohammadi mohammad barzegari

since crosses of lines with suitable genetic distance produce excellent hybrids, the identification of genetic diversity between zea mays l. inbred lines in hybrid maize breeding programs has a high priority. a total of 27 inbred lines plus b73 and mo17 (sc704 parents) were evaluated by 15 inter-simple sequence repeat (issr) primers. inbreds were selected randomly from inbred lines from the agr...

Journal: :Journal of Dairy Science 1987

Journal: :Journal of Medical Genetics 1997

Journal: :Journal of Dairy Science 1991

Journal: :Journal of Dairy Science 1988

Journal: :Journal of dairy science 1987
L D Van Vleck

Contemporary groups are used to remove biases from genetic evaluations due to differential effects such as management associated with the grouping. Numerous groups, however, can result in small numbers of records per subclass with associated loss of effective number of daughters for sire evaluation and increased prediction error variance. Thus, in practice, mean square error, bias squared plus ...

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