Abstract:
:A new assay was designed, named checker, that measures the individual response to light in the fruitfly Drosophila melanogaster larva. In this assay the Drosophila larva apparently modulates its pattern of locomotion when faced with a choice between a dark and lit environment by orienting its movement towards the dark environment. We show that, in this assay, a response to light can be measured as an increase in residence time in the dark versus the lit quadrant. Mutations that disrupt phototransduction in the adult Drosophila abolish the larval response to light, demonstrating that this larval visual function is similar to that of the adult fly. Similarly, no response to light was detected in strains where the larval visual system (photoreceptors and target area) was disrupted by a mutation in the homeobox containing gene sine oculis (so) gene. Ablation of photoreceptors by the targeted expression of the cell death gene hid under the control of the photoreceptor-specific transcription factor glass (gl) abolishes this response entirely. Finally, we demonstrate that this response to light can be mediated by rhodopsins other than the blue absorbing Rh1.
journal_name
Behav Genetjournal_title
Behavior geneticsauthors
Hassan J,Busto M,Iyengar B,Campos ARdoi
10.1023/a:1002090627601subject
Has Abstractpub_date
2000-01-01 00:00:00pages
59-69issue
1eissn
0001-8244issn
1573-3297journal_volume
30pub_type
杂志文章abstract::Heritability estimates of birth weight have been inconsistent. Possible explanations are heritability changes during gestational age or the influence of covariates (e.g. chorionicity). The aim of this study was to model birth weights of twins across gestational age and to quantify the genetic and environmental compone...
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doi:10.1007/BF01065462
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pub_type: 杂志文章
doi:10.1023/B:BEGE.0000009479.02183.1f
更新日期:2004-01-01 00:00:00
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journal_title:Behavior genetics
pub_type: 杂志文章
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