Open-field behavior in mice: evidence for a major gene effect mediated by the visual system

JC DeFries, JP Hegmann, MW Weir - Science, 1966 - science.org
JC DeFries, JP Hegmann, MW Weir
Science, 1966science.org
In segregating F2, F3, and F4 generations, albino mice had lower activity and higher
defecation scores than pigmented animals when tested in a brightly lighted open field.
These differences persisted when members of an F5 generation were tested under white
light, but largely disappeared under red light. Thus it was concluded that there is a major
gene effect on the quantitative traits of open-field activity and defecation which is mediated
by the visual system and that albino mice are more photophobic than pigmented mice under …
In segregating F2, F3, and F4 generations, albino mice had lower activity and higher defecation scores than pigmented animals when tested in a brightly lighted open field. These differences persisted when members of an F5 generation were tested under white light, but largely disappeared under red light. Thus it was concluded that there is a major gene effect on the quantitative traits of open-field activity and defecation which is mediated by the visual system and that albino mice are more photophobic than pigmented mice under conditions of bright illumination.
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