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Bio$1500$–$Arabidopsis$Lab$Module$$
$Arabidopsis$Lab$3$worksheet$(15$points)$
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Student$name:$Yosan$Ghebremichael$
Lab$group$name/number:$2F2$
Date:$4/15/26$
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NOTE:$Please$ensure$you$fill$in$the$worksheet$during$the$lab$and$upload$a$copy$of$it$
to$Canvas$by$the$end$of$the$lab$day.$
!
Checking$your$background$knowledge$
Q1.$In$your$groups$discuss$some$of$the$distinct$differences$you$expect$to$see$in$plants$
grown$in$dark$vs.$light$conditions.$$
The$response$in$the$picture$below$is$related$to$PhyB!$gene$and$Red!$Light.$
How$do$you$expect$the$mutants$for$this$gene$to$grow$in$dark,$red,$and$blue$light?$(1.5$
points)$$
Dark:!long,!thin,!pale!seedlings!(etiolated!growth)!
Red!light:!still!look!like!dark-grown!plants!because!they!cannot!detect!red!light!properly!
Blue!light:!grow!like!wild!type!because!blue!light!uses!a!different!system!
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Q2.$Within$your$groups$discuss$some$of$the$distinct$differences$you$expect$to$see$in$
plants$grown$in$dark$vs.$blue$light$from$side$conditions.$$
The$response$in$the$picture$below$is$related$to$Phot$gene$and$!Blue$light.$
