Horner B E, Dawson W D
Department of Biological Sciences, Smith College, Northampton, Massachusetts.
J Hered. 1993 Jul-Aug;84(4):306-11. doi: 10.1093/oxfordjournals.jhered.a111345.
A novel pelage color variant appeared in a laboratory colony of white-footed mice (Peromyscus leucopus) from Massachusetts. The mature adult coat color of this variant exhibits a rich golden tan appearance on the dorsum with white underparts. The trait is inherited as an autosomal recessive. Phenotypic comparisons with other rodents suggest that the trait is attributable to an allele at the brown (b) locus. Under laboratory conditions homozygous or heterozygous golden-nugget Peromyscus do not differ significantly from the wild type in litter size, litter survival, nest defense, or body weight. The possibility that the allele confers some adaptive value in nature is considered. The trait is given the tentative designation bgn (golden-nugget).
在来自马萨诸塞州的白足鼠（白足鼠属）实验室种群中出现了一种新的毛色变异。这种变异的成年个体背部毛色呈现出浓郁的金棕色，腹部为白色。该性状作为常染色体隐性遗传。与其他啮齿动物的表型比较表明，该性状归因于棕色（b）位点的一个等位基因。在实验室条件下，纯合或杂合的金块白足鼠在产仔数、幼仔存活率、巢穴防御或体重方面与野生型没有显著差异。考虑到该等位基因在自然环境中可能具有某种适应性价值。该性状被暂定命名为bgn（金块）。
