Selection for a Threshold Character in Drosophila IV. Chromosomal Analyses of Plateaued Populations

AUTOR(ES)

Latter, B. D. H.

RESUMO

Chromosome substitution and intra-chromosomal recombination techniques have been employed to determine the genetic basis of limits to selection in lines selected for high scutellar bristle number from the Canberra population. Three observations indicate the presence of an upper threshold affecting some component traits, which is not readily discernible at the level of the selected phenotype:

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