Week Blanked

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BICD120:Dr.Schmidt Week 5

TA:ZaraTabi(ztabi@ucsd,edu) AIM:ztabi06 OH:ByemailAppt.

NowI KnowMyABC'slof FlowerDevelopmentl Basic Flower Structure: willtransform itself ) meristem undercertain environmentalcues - Theshootapical( intothe whichwillgoontodevelop meristem, intoan meristem, . Cellsofthefloralmeristem ) ABCModel fate,depending onkeygenes takeonparticular Vocab: Flower -Quick - HasALL4 whorls whorls - Missing structures - Hasbothmaleandfemale - Hasonly1sex

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Notes: Some actas These ABCproteins control transcription ofothergenesinflowerdevelopment!

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- TheA andCgenesare .if oneis mutatediinactivated theotheronewillbeableto - TheCgenealsodictates . Without togrow isstillactive andwillcontinue it,floralmeristem protein " Region) ofa aresubunits 0fthe" - AP3andPl(Genes . lf onegeneismutated, "8"region iftheotherisnormal isdefective, regardless thewhole which typegenes,

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HowDoesa PlantKnowWhentoFlower? Photoperiodismlength! - Themostimportant factoris - Three Types ofPlants: . LongDay-Needlightperiod thana criticallengthtoflower . ShortDay-Needlightperiod thana criticallengthtoflower . DayNeutralnotdependent ondaylength Flower development activity isresponsible fordevelopment offlowers, aswellas withreversible thata pigment -Discovered )

. Actually a ) sends signal to

present intheleaf growth tochange

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