GENETIC HOMEOSTASIS, HETEROSIS AND HETEROZYGOSITY

2015 ◽  
pp. 208-228
Keyword(s):  
Genetic Homeostasis

Genetic Homeostasis

2001 ◽  
pp. 835-838
Author(s):  
J. Phelan
Keyword(s):  
Genetic Homeostasis

Evaluation of genetic homeostasis in animals at different stages of ontogenesis in the environment

2014 ◽  
Vol 45 (3) ◽  
pp. 134-142 ◽  
Author(s):  
C. G. Ordzhonikidze ◽  
T. B. Demidova ◽  
E. Yu. Krysanov
Keyword(s):  
Genetic Homeostasis

Selection for economic characters in Australian Merino sheep. V. Further estimates of phenotypic and genetic parameters.

1955 ◽  
Vol 6 (1) ◽  
pp. 77 ◽  
Author(s):  
FHW Morley
Keyword(s):  
Genetic Correlations ◽  
Minor Importance ◽  
Agricultural Experiment Station ◽  
Genetic Progress ◽  
Sheep Population ◽  
Merino Sheep ◽  
Agricultural Experiment ◽  
Selection For ◽  
Fleece Weight ◽  
Genetic Homeostasis

Estimates of heritability, genetic correlations, phenotypic correlations, and other parameters among eight characteristics were obtained from Merino sheep at Trangie Agricultural Experiment Station. One set of estimates was obtained by parent-offspring regressions from data obtained between 1943 and 1952. Another set was obtained by half-sib analyses from data from sheep with first adult shearings in 1953. Estimates of heritability were: greasy fleece weight, 0.40 ± 0.06; yield (per cent.), 0.39 ± 0.07; clean fleece weight, 0.47 ± 0.07; staple length, 0.56 � 0.07; crimps per inch, 0.47 ± 0.11; folds, 0.50 ± 0.07; body weight, 0.36 ± 0.08; birthcoat, 0.80 ± 0.10. The most important genetic correlation limiting genetic improvement in clean fleece weight is that between this trait and crimps per inch. Because of this the rate of improvement in fleece weight could be reduced by about 30 per cent. whenever crimps per inch is also selected. Other genetic correlations indicate antagonisms between characteristics, but these antagonisms appear to be of minor importance except that between clean fleece weight and crimps per inch. This sheep population does not appear to have reached a state of genetic homeostasis, a t least with respect to the characteristics studied. However, the findings emphasize the necessity for careful evaluation of the economic importance of different traits, and for accurate measurement, if maximum genetic progress is to be achieved.

Genetic Homeostasis

1955 ◽  
Vol 47 (3) ◽  
pp. 150-150
Author(s):  
H. H. Kramer
Keyword(s):  
Genetic Homeostasis
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