van Dijken F R, van Sambeek M P, Scharloo W
Behav Genet. 1979 Nov;9(6):563-70. doi: 10.1007/BF01067352.
Divergent directional selection produced three pairs of lines each consisting of a line with high and a line with low locomotor activity. Reciprocal crosses between the high and low lines of one of these pairs showed that a considerable part of the activity differences was contributed by differences between the X chromosomes. This was confirmed by a substitution of the three large chromosomes, between the low and the high lines. The two large autosomal chromosomes had only minor effects. Interactions between chromosomes were sometimes significant. Low-activity alleles tended to be dominant over alleles for high activity.
趋异定向选择产生了三对品系，每对品系都由一个运动活性高的品系和一个运动活性低的品系组成。其中一对品系中高活性品系和低活性品系之间的正反交表明，活性差异的相当一部分是由X染色体之间的差异造成的。通过在低活性品系和高活性品系之间替换三条大染色体，这一点得到了证实。两条大的常染色体只有轻微影响。染色体之间的相互作用有时很显著。低活性等位基因往往比高活性等位基因更具显性。
