00931naa a2200181 a 450000100080000000500110000800800410001910000190006024501230007926000090020252003980021165000240060965000140063365000170064765000140066470000180067877300530069615211962023-09-04       1957    bl uuuu     u00u1 u    #d1 aCLAYTON, G. A.  aAn experimental check on quantitative genetical theory. II. The long-term effects of selection.h[electronic resource]  c1957  aThe results of ontinued selection for abdominal bristles in a large population of Drosophila melanogaster are present and discussed. Response had slowed down considerably in many lines after twenty generations, although in some it continued until the 30th generation. In many of the lines, the cessation of reponse was abrupt and lack of response did not mean exhaustion of gentic variability.  aGenetic improvement  aGenética  aMelhoramento  aSeleção1 aROBERTSON, A.  tJournal Geneticsgv. 55, n. 1, p. 152-170, 1957.